Polyphosphates
(polyphosphate 的復數) 多磷酸鹽
??? 情景例句
Hmm. Anything else?
嗯， 還有其他事嗎？
Arthur must send that letter soon.
亞瑟，你必須立刻投遞那封信。
Mum and Dad were not at home.
爸爸媽媽不在家。