Piston valve
[机] 活塞阀
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
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
You don't know Jack Wang? You're hiking.
你不认识杰克王？看玩笑吧？
Excuse me,sir.Can you give me some information
对不起,先生.你能给我一些信息吗？
Here were not carvings in the rock but paintings.
这里岩石上不是石刻而是绘画。