diff --git a/app/main.py b/app/main.py
index 9c46b5e..0c747a3 100644
--- a/app/main.py
+++ b/app/main.py
@@ -2,7 +2,7 @@
 # Copyright 2019 (C) Hui Lan <hui.lan@cantab.net>
 # Written permission must be obtained from the author for commercial uses.
 ###########################################################################
-from flask import abort
+from flask import abort, jsonify
 from markupsafe import escape
 from Login import *
 from Article import *
@@ -11,6 +11,7 @@ from user_service import userService
 from account_service import accountService
 from admin_service import adminService, ADMIN_NAME
 import os
+from translate import *
 
 app = Flask(__name__)
 app.secret_key = os.urandom(32)
@@ -118,6 +119,15 @@ def mainpage():
                                number_of_essays=number_of_essays,
                                ratio = ratio)
 
+@app.route("/translate", methods=['POST'])
+def translate_word():
+    data = request.get_json()
+    word = data.get('word', '')
+    from_lang = data.get('from_lang', 'en')  # 假设默认源语言是英语
+    to_lang = data.get('to_lang', 'zh')     # 假设默认目标语言是中文
+    result = translate(word, from_lang, to_lang)
+    return jsonify({'translation': result})
+
 
 if __name__ == '__main__':
     '''
diff --git a/app/static/js/highlight.js b/app/static/js/highlight.js
index 9646ff3..c239eaa 100644
--- a/app/static/js/highlight.js
+++ b/app/static/js/highlight.js
@@ -17,21 +17,20 @@ function showBtnHandler() {
 }
 
 function getWord() {
-    return window.getSelection ? window.getSelection() : document.selection.createRange().text;
+    return window.getSelection ? window.getSelection().toString() : document.selection.createRange().text;
 }
 
 function highLight() {
     if (!isHighlight) return;
-    let word = (getWord() + "").trim();
+    let word = (getWord() + "").trim().replace(/[.,\/#!$%\^&\*;:{}=\-_`~()]/g, "");
     let articleContent = document.getElementById("article").innerHTML; // innerHTML保留HTML标签来保持部分格式，且适配不同的浏览器
     let pickedWords = document.getElementById("selected-words");  // words picked to the text area
     let dictionaryWords = document.getElementById("selected-words2"); // words appearing in the user's new words list
     let allWords = dictionaryWords === null ? pickedWords.value + " " : pickedWords.value + " " + dictionaryWords.value;
-    highlightWords = document.getElementById("selected-words3");
+    let highlightWords = document.getElementById("selected-words3");
     allWords = highlightWords == null ? allWords : allWords + " " + highlightWords.value;
     const list = allWords.split(" "); // 将所有的生词放入一个list中
     if(word !== null && word !== "" && word !== " "){
-        let articleContent_fb2 = articleContent;
         if(localStorage.getItem("nowWords").indexOf(word) !== -1 || localStorage.getItem("nowWords").indexOf(word.toLowerCase()) !== -1){
             articleContent = articleContent.replace(new RegExp('<span class="highlighted">' + word + '</span>', "gi"), word);
             pickedWords.value = localStorage.getItem("nowWords").replace(word,"");
@@ -58,6 +57,7 @@ function highLight() {
         articleContent = articleContent.replace(new RegExp("\\b" + word + "\\b", "g"), "<span class='highlighted'>" + word + "</span>");
     }
     document.getElementById("article").innerHTML = articleContent;
+    addClickEventToHighlightedWords();
 }
 
 function cancelHighlighting() {
@@ -83,7 +83,62 @@ function toggleHighlighting() {
         isHighlight = true;
         highLight();
     }
-     localStorage.setItem('highlightChecked', isHighlight);
+    localStorage.setItem('highlightChecked', isHighlight);
 }
 
-showBtnHandler();
\ No newline at end of file
+function showWordMeaning(event) {
+    const word = event.target.innerText.trim().replace(/[.,\/#!$%\^&\*;:{}=\-_`~()]/g, "").toLowerCase();
+    const apiUrl = '/translate';
+    const rect = event.target.getBoundingClientRect();
+    const tooltipX = rect.left + window.scrollX;
+    const tooltipY = rect.top + window.scrollY + rect.height;
+    // 发送POST请求
+    fetch(apiUrl, {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({ word: word }), // 发送的JSON数据
+    })
+        .then(response => {
+            if (!response.ok) {
+                throw new Error('Network response was not ok');
+            }
+            return response.json(); // 解析JSON响应
+        })
+        .then(data => {
+            // 假设data.translation是翻译结果
+            const tooltip = document.getElementById('tooltip');
+            if (!tooltip) {
+                console.error('Tooltip element not found');
+                return;
+            }
+
+            tooltip.textContent = data.translation || '没有找到该单词的中文意思';
+            tooltip.style.left = `${tooltipX}px`;
+            tooltip.style.top = `${tooltipY}px`;
+            tooltip.style.display = 'block';
+	    tooltip.style.position = 'absolute';
+	    tooltip.style.background = 'yellow';
+
+            // 可以在这里添加点击事件监听器来隐藏tooltip，但注意避免内存泄漏
+            document.addEventListener('click', function handler(e) {
+                if (!tooltip.contains(e.target)) {
+                    tooltip.style.display = 'none';
+                    document.removeEventListener('click', handler);
+                }
+            });
+        })
+        .catch(error => {
+            console.error('There was a problem with your fetch operation:', error);
+        });
+}
+
+function addClickEventToHighlightedWords() {
+    const highlightedWords = document.querySelectorAll('.highlighted');
+    highlightedWords.forEach(word => {
+        word.addEventListener('click', showWordMeaning);
+    });
+}
+
+showBtnHandler();
diff --git a/app/templates/userpage_get.html b/app/templates/userpage_get.html
index 8daa344..60598df 100644
--- a/app/templates/userpage_get.html
+++ b/app/templates/userpage_get.html
@@ -107,6 +107,7 @@
                 <button onclick="toggle_visibility('answer');">ANSWER</button>
                 <div id="answer" style="display:none;">{{ today_article['answer'] }}</div><br/>
             </div>
+	    <div id="tooltip"></div>
         </div>
         <div class="alert alert-success" role="alert" id="not_found" style="display:none;">
             <p class="text-muted"><span class="badge bg-success">Notes:</span><br>No article is currently available for you. You can try again a few times or mark new words in the passage to improve your level.</p>
diff --git a/app/translate.py b/app/translate.py
new file mode 100644
index 0000000..654fce0
--- /dev/null
+++ b/app/translate.py
@@ -0,0 +1,52 @@
+import requests
+import hashlib
+import time
+from urllib.parse import urlencode
+
+# 假设这是从某个配置文件中读取的
+class BaiduContent:
+    APPID = '20240702002090356'
+    SECRET = '3CcqcMAJdIIpgG0uMS_f'
+
+def generate_sign(q, salt):
+    """生成百度翻译API所需的签名"""
+    appid = BaiduContent.APPID
+    secret = BaiduContent.SECRET
+    appid_with_data = appid + q + salt + secret
+    md5_obj = hashlib.md5(appid_with_data.encode('utf-8'))
+    return md5_obj.hexdigest()
+
+def translate(q, from_lang, to_lang):
+    """调用百度翻译API进行翻译"""
+    salt = str(int(time.time()))  # 生成一个时间戳作为salt
+    sign = generate_sign(q, salt)
+
+    # 封装请求参数
+    params = {
+        'q': q,
+        'from': from_lang,
+        'to': to_lang,
+        'appid': BaiduContent.APPID,
+        'salt': salt,
+        'sign': sign
+    }
+
+    # 构造请求URL（百度翻译API使用POST请求，并将参数放在请求体中）
+    url = "http://api.fanyi.baidu.com/api/trans/vip/translate"
+
+    # 发送POST请求
+    headers = {'Content-Type': 'application/x-www-form-urlencoded'}
+    data = urlencode(params).encode('utf-8')  # 注意：需要编码为bytes
+
+    response = requests.post(url, data=data, headers=headers)
+
+    # 检查响应状态码
+    if response.status_code == 200:
+        # 解析并返回JSON响应体中的翻译结果
+        try:
+            return response.json()['trans_result'][0]['dst']
+        except (KeyError, IndexError):
+            return "Invalid response from API"
+    else:
+        # 返回错误信息或状态码
+        return {"error": f"Failed with status code {response.status_code}"}
diff --git a/requirements.txt b/requirements.txt
index 4b81c20..07c99c8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,5 +4,5 @@ PyYAML~=6.0
 pony==0.7.16
 snowballstemmer==2.2.0
 Werkzeug==2.2.2
-
-pytest~=8.1.1
\ No newline at end of file
+requests
+pytest~=8.1.1