Knocking
[机] 爆震内燃机
✅ 同义词
🗣️ 情景例句
You don't recognize me, do you?
你不认识我了， 是吗？
Work hard, otherwise you'll be sorry.
努力用功，否则你会后悔的。
The doctor began to operate on the boy.
医生开始给那个男孩动手术。