Ethymylation
[机] 炔化
🗣️ 情景例句
I don't know what I would do without you.
我真不知道没有你们我怎么办。
Do you have any goods to declare for customs?
你有任何物品要在海关呈报吗？
What's the climate like in your country?
你们的国家的气候是怎么样？