Ehs
abbr. 环境、健康和安全（Environment Health Safety）；环境卫生局（Environmental Health Services）
🗣️ 情景例句
That's like closing the gate after the horse has bolted.
那无异于马后炮。
If it doesn't rain tomorrow, will you get a haircut?
如果明天不下雨的话，你会去剪头发吗？
How it came about that snakes manufactured poison is a mystery.
蛇是怎样产生毒液的，这是一个谜。