Ethymylation
[机] 炔化
🗣️ 情景例句
That's a good question, Robbie.
这是个好问题， Robbie。
They are looking forward to the summer vacation.
他们正盼望着暑假的来临。
We have this item in three price levels.
此一品目，我们分三种等级的价格。