Clappet (valve)
[化] 止回阀
🧩 词语组成解析
[建] 止回阀
🗣️ 情景例句
Do you know where the nearest post office is?
你知道最近的邮局在哪儿吗？
What is done cannot be undone.
木已成舟。
Jim ! Jim ! It's time to get up !
吉姆，吉姆，该起床了！