Ethynes
[化] 炔烃
🗣️ 情景例句
to plan the refurnishing of the old library
计划重新整修老图书馆
How many of these are you going to lend her?
你要借多少给她？
How ever you may work hard, the boss will not be fully satisfied.
无论你有多努力，老板总不会完全满意。