Melatonin
[化] 褪黑激素; N-乙酰-5-甲氧基色胺
🗣️ 情景例句
The pleasure is all mine.
这是我的荣幸。
He was at a loss for words.
他不知道该说什么好。
Gum Tree? Is it here --near the town of Ashland?
桉树？是在这儿--靠近阿什兰德镇吧？