Prelog-djerassi lactone
[化] 普雷洛格-杰拉西内酯
🧩 词语组成解析
n. [化] 内酯
🗣️ 情景例句
I just called to tell you
我打电话是想告诉你
One never loses anything by politeness.
有礼貌对自己不会吃亏。
Let 's see, that means a 2% discount if paid within ten days.
哦。那是说如果10天内付款，有2%的折扣。