caffeine
n[U]
stimulant drug found in tea leaves and coffee beans 咖啡硷; 咖啡因.
🗣️ 情景例句
I like to study in the library because it's so quiet.
我喜欢在图书馆学习因为那儿很安静。
That's bullshit!
听你在放屁!
Nothing can be compared, he maintains, with the first cockcrow, the twittering of birds at dawn, the sight of the rising sun glinting on the trees and pastures.