Polyphosphates
(polyphosphate 的复数) 多磷酸盐
🗣️ 情景例句
It's nice to meet you.
很高兴见到你。
You should take the advice of your teacher.
你应该听老师的话？
we'll be poor again.What'll we do then?
我们又会变穷的。那时我们怎么办呢？