Proctanal
肝素胆碱
🗣️ 情景例句
Hey, this is a cool disco!
嘿，这个迪厅很酷。
Can't you hear me?
你听不到我说的话吗？
Precautions of this sort are necessary, for it is impossible to foretell the exact nature of the difficulties which will confront the pot-holer.
作出这样的准备是必要的，因为无法预见到洞穴探险者究竟会遇到什么性质的困难。