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
I can't believe this is really happening!
我不敢相信这一切真的发生了
I haven't heard from him for a long time.
我很久没有收到他的信了。
She went into my room and got a big surprise when she saw all those books on the floor.
她走进我的房间，当她看到地板上的那些书时，大吃一惊。