Vestolan
[德]费斯托纶(聚乙烯纤维)
🗣️ 情景例句
Run it by me again, if you don't mind.
不介意的话，请再说一遍。
We have some reports to show you for background information.
我们还有一些报告向你介绍背景资料。
The question was, which one?
问题是，哪一种气体导致火灾呢？