Synchrone
等时线(彗尾)
🗣️ 情景例句
Thank you. I appreciate your help.
谢谢！很感谢你的帮助。
Forgive me for interrupting, but I have a question.
对不起我插个嘴，我有一个问题。
The machines will not operate properly.
那些机器不能正常运转。