Monoacetate
一乙酸酯
??? 情景例句
I've been trying
我一直努力
Poor men's words have little weight.
人微言輕。
It is a city in a hurry, but a very exciting place to be.
這是一座熙熙攘攘的城市，但也是一個(gè)富于刺激的地方。