Human chorionic somatotropin(hcs)
[化] 人绒毛膜生长素
🧩 词语组成解析
[医] 绒[毛]膜的
🗣️ 情景例句
It's hard for some older people to take all that noise.
一些老年人没办法忍受那些噪音。
Why are you crying?
你为什么哭？
Opportunity knocks but once.
机不可失，时不再来。