Valerolactone
戊內(nèi)酯
??? 情景例句
and then a big red barn.
然后就是一座大的紅色倉。
He seems very serious, but in fact he has a delightful sense of humor.
他看上去很嚴(yán)肅，其實很詼諧。
I was late for work yesterday，
我昨天上班遲到了。