Metenkephalin
n. [生化]蛋内啡肽
🗣️ 情景例句
I didn't have that when Richard and Susan were born.
在Richard和Susan出生时我可没有人帮忙。
Such a small mistake is pardonable.
不会追究犯了那么小的错误的。
I insist that you give me my money back.
我要求你把钱退给我。