diff --git a/frontend/src/utils/trie.js b/frontend/src/utils/trie.js
index 86a54f5..a869cd5 100644
--- a/frontend/src/utils/trie.js
+++ b/frontend/src/utils/trie.js
@@ -41,7 +41,7 @@ export class Trie {
     return this.get(key) !== null
   }
 
-  greedyMatch(str) {
+  lazyMatch(str) {
     let node = this._root
     for (let char of str) {
       let nextNode = node.children[char]
diff --git a/frontend/src/views/Room.vue b/frontend/src/views/Room.vue
index 62e8c47..d6134df 100644
--- a/frontend/src/views/Room.vue
+++ b/frontend/src/views/Room.vue
@@ -272,7 +272,7 @@ export default {
       let blockKeywordsTrie = this.blockKeywordsTrie
       for (let i = 0; i < content.length; i++) {
         let remainContent = content.substring(i)
-        if (blockKeywordsTrie.greedyMatch(remainContent) !== null) {
+        if (blockKeywordsTrie.lazyMatch(remainContent) !== null) {
           return false
         }
       }
@@ -327,7 +327,7 @@ export default {
       let pos = 0
       while (pos < data.content.length) {
         let remainContent = data.content.substring(pos)
-        let matchEmoticon = emoticonsTrie.greedyMatch(remainContent)
+        let matchEmoticon = emoticonsTrie.lazyMatch(remainContent)
         if (matchEmoticon === null) {
           pos++
           continue
diff --git a/services/translate.py b/services/translate.py
index d85c06d..bc7fd9b 100644
--- a/services/translate.py
+++ b/services/translate.py
@@ -446,7 +446,7 @@ class TencentTranslate(FlowControlTranslateProvider):
                     logger.warning('TencentTranslate request failed: status=%d %s', r.status, r.reason)
                     return None
                 data = (await r.json())['Response']
-        except (aiohttp.ClientError, asyncio.TimeoutError):
+        except (aiohttp.ClientConnectionError, asyncio.TimeoutError):
             return None
         error = data.get('Error', None)
         if error is not None:
@@ -554,7 +554,7 @@ class BaiduTranslate(FlowControlTranslateProvider):
                     logger.warning('BaiduTranslate request failed: status=%d %s', r.status, r.reason)
                     return None
                 data = await r.json()
-        except (aiohttp.ClientError, asyncio.TimeoutError):
+        except (aiohttp.ClientConnectionError, asyncio.TimeoutError):
             return None
         error_code = data.get('error_code', None)
         if error_code is not None: