Dipropargyl
[化] 联炔丙基; 1,5-己二炔; 二炔丙基
🗣️ 情景例句
You're welcome anytime.
欢迎你随时来玩。
We have a lot of invitation cards, but they are all for the same date.
我们接到了许多请帖，但是上面的日期却全都是同一天。
He could not find his fifty pence piece anywhere, and what is more,
但他摸了半天也没找到那50便士硬币，