Mechanical seal
[化] 机械密封; 端面密封
🧩 词语组成解析
seal
[sil]
n. 密封;印章;海豹;封条;
v. 密封;盖章;决定;封上（信封）;
🗣️ 情景例句
Of course, Harry.
当然可以， Harry。
I'm sorry. I'm engaged now.
对不起，我现在正忙着。
How long did it take you to accomplish this complicated job?
你花了多久才作完这复杂的活儿？