Postvulcanization
后硫化, 二次硫化
🗣️ 情景例句
but ... but I've been noticing
但……但我注意到
What will you do to help protect our environment from being seriously polluted?
你将为帮助保护我们的环境免遭到污染做些什么呢？
We can't sign the contract yet.
我们还不能在契约上签字。