Dimetone
双甲酮, 二甲基环已二酮
🗣️ 情景例句
I never slept.
我总睡不着。
The telepnone is out of order.
这电话出毛病了。
A flight attendant would take charge of me and I never had an unpleasant experience.
我总是由一位空中乘务员照管，从未遇到过不愉快的经历。