Acetylene acid
[机] 炔属酸
🧩 词语组成解析
n. 乙炔, 电石气\\n[化] 乙炔; 双亚乙基
🗣️ 情景例句
I always go back to the city in a wonderful state of mind.
我再回到城里时， 精神总是十分饱满。
It all depends.
视情形而定。
We've been anxious about you. We were expecting you back much earlier.
我们都为你们着急呢。都盼着你们早点儿回来。