Clapper valve
瓣阀
🧩 词语组成解析
clapper
[['klæpə]]
n. 拍手者, 铃锤, 钟锤\\n[电] 铃锤
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;
🗣️ 情景例句
Thanks, Mrs. Martinelli.
谢谢 ，Martinelli太太。
I asked him to check it for me, but he wouldn't.
我请他帮我检查，但是他不肯。
What do we need?
我们都需要什么？