Piston knock
[机] 活塞敲击
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
knock
[nɑk]
n. 短促的敲打（声）;爆震声;敲击声;敲门（或窗等）声;
vi. 猛烈敲击;与某物相撞;撞到了桌子;
vt. （心）怦怦跳;把…撞击成（某种状态）;批评;
🗣️ 情景例句
You're right. We'll talk to her about it.
说得对。我们要跟她谈谈。
Why don't you agree?
你为什么不同意？
I can't see them there. Did you buy any this morning?
桌子下面没有。你今天早晨买了吗？