Polyprotic acid
[化] 多元酸
🧩 词语组成解析
🗣️ 情景例句
Didn't you give them to Richard?
你不是把它们交给Richard了吗？
Finished labours are pleasant.
大功告成，好不高兴。
An ocean wave passing through deep water causes a particle on the surface to move in a roughly circular orbit,
穿过深水的海浪使水面上的一个微粒按照一种近乎圆形的轨道移动，