Polyprotonic acid
[化] 多元酸
🧩 词语组成解析
🗣️ 情景例句
Did you ever think of photographing an aerobics class?
你想过拍摄有氧运动课吗？
The crowd gasped with astonishment.
大家惊讶的屏住呼吸。
I see.
我明白了。