Valve cover
[化] 阀套
🧩 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;
🗣️ 情景例句
I feel lucky tonight.
今晚我觉得很幸运。
His leg is wounded, Does it hurt?
他的腿受伤了，疼不疼？
He will be away for two months.
他要离开两个月，