Polyphosphates
(polyphosphate 的复数) 多磷酸盐
🗣️ 情景例句
Now let's discuss the terms of payment.
现在来讨论付款条件。
What is th boarding time?
何时登机呢？
People had to use other ways to record information.
人们只得使用其他方法记录资料。