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
So tell me about your educational history.
请告诉我你的教育经历。
My mouth is watering.
我在流口水。
That's a big box. Is it heavy? Please let me help you.
这是个大盒子。重吗？让我来帮你。