Perphosphoric acid
[化] 过磷酸; 过二磷酸
🧩 词语组成解析
🗣️ 情景例句
International travel involves a lot of waiting around in airports.
经常在机场等候是环球旅行的一部分。
Whom will you have lunch with?
你将和谁吃饭？
Who says?
谁说的？