Pfas
abbr. personal fall arrest system 防坠落系统; [医][=performic acid-Schiff reaction]过氧甲酸-席夫反应
🗣️ 情景例句
You say that many big companies act unscrupulously, but can you give me one example?
你说许多大公司不择手段，你能举个例子吗？
Good counsel does no harm.
忠言无害。
Industrialized farming methods produce cheap meat products: beef, pork and chicken.
工业化的农作方式生产出廉价的肉类制品——牛肉、猪肉和鸡肉。