Polyphosphoric acid
[化] 多磷酸
🧩 词语组成解析
🗣️ 情景例句
I made an appointment with the doctor at three.
我和医生约好3点钟看病。
For a few, scholarships were sources of support.
有少数人，奖学金是他们接受教育的学费来源。
This is a standard size.
这是标准尺寸。