Polyphosphates
(polyphosphate 的复数) 多磷酸盐
🗣️ 情景例句
Hmm. Anything else?
嗯， 还有其他事吗？
Arthur must send that letter soon.
亚瑟，你必须立刻投递那封信。
Mum and Dad were not at home.
爸爸妈妈不在家。