Knocking
[机] 爆震内燃机
✅ 同义词
🗣️ 情景例句
More than 50% of marriages are doomed to fall.
50%的婚姻都注定以失败告终。
It's not up to his usual standard.
这次没有达到他平时的水平。
That's a great idea!
好主意！