Mesitylol
[化] ┯; 1,3,5-三甲基苯
??? 情景例句
I still don't understand what you mean.
我還是弄不懂你是什么意思。
That's not a good idea!
這樣不太好吧！
It has 102 storeys and 73 lifts.
有102層樓，有電梯73部。