Warning board
[化] 警报牌; 危险标示牌
🧩 词语组成解析
warning
['wɔrnɪŋ]
n. 警告;征候，预兆;前车之鉴;
adj. 警告的;告诫的;引以为戒的;
v. 警告( warn的现在分词);提醒;告诫;预先通知;
warn警告+ing名词后缀 → 警告
board
[bɔ:d]
n. 板;董事会;甲板;膳食;
vt. 上（船、车或飞机）;收费供…膳宿;使搭伙，使寄宿;强行登（船）;
vi. （火车、轮船、飞机等）接受乘客;搭伙，寄宿;
🗣️ 情景例句
That kind of thing.
等等。
An empty bag cannot stand upright.
空袋不能直立。
When one seriously studies the social orders that have had the opportunity to develop autonomously,
当一个人认真地研究自发形成的社会秩序时，