Gerroidea
水黾总科
🗣️ 情景例句
Am I older than you? You look so young.
我比你老吗？你看起来非常年轻？
What are those?
那些是什么？
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。