Pcast
abbr. Presidential Commission on Aviation Security and Terrorism 航空安全和恐怖主义总统委员会
🗣️ 情景例句
It is.
它是的。
Sharp stomachs make short graces.
饿的肚子顾不到体面。
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。