Phosphonate
膦酸盐, 膦酸酯
🗣️ 情景例句
The rich few nations of this world take up the vast majority of the wealth and resources.
少数几个富裕的国家占有了大多数的财富和资源。
If the old dog barks,he gives counsel.
老狗叫，是忠告。
Yes, it is. You need to wear warmer clothes.
是啊，你应该穿得更暖和些。