Phosphenic acid
[化] 氧次膦酸
🧩 词语组成解析
🗣️ 情景例句
No, it's Ok.
不用， 没有关系 。
How often did I tell you not to speak so loud?
我告诉你多少次不要讲话这么大声?
It's much cheaper to camp than to stay in a hotel.
露营比住旅馆要便宜多了。