Topterone
羟基丙基雄甾烯酮
🗣️ 情景例句
I was wondering if you could help me. I'd like to know.
不知道你能否帮助我，我想知道。
I usually read a book to kill time.
我通常用看书来消磨时间。
The first records the arrival of longitudinal vibrations.
首先记录下的是纵向波的到达；