Allylin
甘油-烯丙基醚
🗣️ 情景例句
I would like to send this by registered mail, please.
我想把这封信挂号寄出。
Perhaps he isn't here.
也许他不在这儿。
In the centre of the hall, there were a number of tall structures which contained coloured lights.
展厅中央是装有彩色灯泡的许多高高的构件，