Valve clack
[化] 阀瓣
🧩 词语组成解析
valve
[vælv]
n. 阀;真空管;（管乐器的）活栓;（心脏的）瓣膜;
vt. 装阀于;以活门调节;
clack
[[klæk]]
v. 噼啪响\\nn. 噼啪响
🗣️ 情景例句
Sorry to be a pest.
不好意思打扰你。
Which train do I take to Philadelphia?
去费城乘哪趟车？
If Tom cannot keep his promise, he'll lose face.
如果汤姆不能信守诺言，他就会丢面子。