Hydroxycaffeine
羟咖啡因
🗣️ 情景例句
No, thanks.
不用了， 谢谢。
An old dog will learn no new tricks.
老家夥学不出新名堂。
He has worked there since it opened in 1989.
从1989年这家工厂开办起，他就在这儿工作。