Melatonin
[化] 褪黑激素; N-乙酰-5-甲氧基色胺
🗣️ 情景例句
Hi.
嗨
In my opinion,the house isn't worth the price they're asking.
按照我的意见,房子不值他们正在问的价格。
As it was extremely heavy, he dumped it on the counter.
布袋很沉，他重重地把布袋扔在柜台上。