doc: reamde

README.en.md

@@ -141,6 +141,10 @@ Example reference: [custom-api_v2.md](https://github.com/fishjar/kiss-translator
 
 Settings page address: https://fishjar.github.io/kiss-translator/options.html
 
+### Subtitle Translation Tips
+
+As long as the KT button is on (blue background with white text), you don't need to click it multiple times. Just click the original subtitle button in the YouTube player and wait for the bilingual subtitles to appear automatically.
+
 ## Future Plans 
 
  This is a side project with no strict timeline. Community contributions are welcome. The following are preliminary feature directions:

README.md

@@ -141,6 +141,10 @@
 
 设置页面地址： https://fishjar.github.io/kiss-translator/options.html
 
+### 字幕翻译小技巧
+
+KT按钮只要是开启状态（蓝底白字），无需多次点击，只需点击开启Youtube播放器本来的字幕按钮，然后等待双语字幕自动呈现即可。
+
 ## 未来规划 
 
  本项目为业余开发，无严格时间表，欢迎社区共建。以下为初步设想的功能方向：