Phostonic acid
[化] 烷基亚膦酸
🧩 词语组成解析
🗣️ 情景例句
What a mess!
太乱了！
Who is the auther of this novel?
谁是这本小说的作者？
It was the first joy I had known for years.
我豁然开朗了。这是我多年来第一次感到高兴的事了。