Emanantion
n. 粒子之呵对质量比
🗣️ 情景例句
The teacher flunked him in geography.
老师给他的地理打不及格。
Did you go to the concert yesterday?
你昨天去听音乐会了吗？
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。