Gegenreaction
逆反应
🗣️ 情景例句
About fifteen minutes.
大约十五分钟吧。
There's a ten thirty flight in the morning.
早上10点半有班机。
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。