Serotonin
n. 血清素\\n[化] 5-羥色胺
??? 情景例句
We want to leave on May 1st and return on May 8th.
我想五月一日走，五月八日回來。
He must have three more weeks of rest before he is released.
他在出院以前，還需要三周時間的靜養。
Yes, that would be fine.
可以，這時間對我很合適。