Hydroxycaffeine
羟咖啡因
🗣️ 情景例句
Well, we all go through this at some stage of life, some of us buy a wig and some of us just stay bald.
我们全部会在生命中的某个时期经历脱发这种事，有些人会去买假发，有些人则会留个光头。
My cousin is a member of a stamp club, He seems stamp collecting.
我的表兄是一个集邮俱乐部成员，他似乎很喜欢集邮。
but that was precisely the idea adopted in some of the early instruments (seismometers) for recording earthquake waves.
但是早期记录地震波的仪器（测震仪）正是采用了这种思路。