Updated 客户端多国语文案 (markdown)

@@ -660,3 +660,18 @@ Leave
 
 
 异常
 异常
 Some Error
 Some Error
+
+警告：超时未点评，再有一次未点评将取消您点评资格。
+Warning! You did not assess the answer in 24 hours. If you should fail again, you would never have the chance to assess answers any more.
+
+双屏显示
+Two-way Video
+
+退出双屏
+One-way Video
+
+对方网络畅通，已切换为视频模式。
+The teacher/student has switched to video call.
+
+对方网络不好，已切换为语音模式。
+The teacher/student has switched to voice call due to poor network conditions.