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
But we can!
但我们能！
A bird may be known by its song.
什么鸟唱什么歌。
Sometimes I have problems at work but on the whole I enjoy my job.
有时我的工作也有问题，但总的来说，我喜欢我的工作。