Placards
n. 招贴( placard的名词复数 ); 标语牌; 海报
🗣️ 情景例句
Never pump gas with the engine running.
发动机在运转时，别加油。
It's going to snow tomorrow.
明天将下雪。
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。