Ultrahigh vacuum seal
[化] 超高真空密封
🧩 词语组成解析
a. 超高的,特高的
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
Oh, let me help you with this.
来， 我帮你放好。
I suppose it's difficult for you to do this.
我推测对你来说做这件事情是很困难的。
What do you mean by special?
怎么特别呢。