Ethadione
[化] 依沙雙酮; 乙┭二酮
??? 情景例句
He has been friendlier lately.
他近來更友好了。
Don't be anxious if I'm late.
如果我回來晚些也不必?fù)?dān)憂。
Have you tried to borrow money from a bank?
你是否試過向銀行借錢呢？