Ghrelin
n. 胃内产生的一种肽，它能够调节食欲、进食和身体构成。; 饥饿激素; [医]生长素是从胃中分离出的一种新的能促进垂体生长激素分泌的肽
🗣️ 情景例句
you had some doubts about wanting to go to Michigan.
你对上Michigan大学有些疑虑。
I'm thinking of quitting the job.
我在考虑辞职。
That's the doorbell, said Ann's mother. They're here!
“门铃响了，”安的母亲说。“他们来啦！”