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
Like father, like son.
有其父必有其子。
Who is calling, please?
请问你是谁？
Let us suppose that you are preparing a meal and keeping an eye on the baby at the same time.
假设你在做饭，同时又在照看孩子。