Ethynes
[化] 炔烃
🗣️ 情景例句
I wish I had one now.
我真希望现在就来一个。
It is so necessary for you to have some rest and relaxation.
你特别需要休息和娱乐。
Hi, Li Lei! Am I late?
你好，李垒！我迟到了没有？