Vinylation
乙烯化作用
🗣️ 情景例句
We were most impressed with your efficiency.
你的工作效率很高，我们极为钦佩。
A great ship asks deep water.
巨轮寻深水而航行。
What on earth has happened to trouble you so?
到底发生什么事让您如此发愁？