Phosphinate
亚膦酸盐, 亚膦酸酯
🗣️ 情景例句
And Do you like sports?.
或“你喜欢运动吗？”
So far I have been learning about England.
到目前为止，我一直在研究有关英格兰的事情。
and it is only in the seas and rivers, and sometimes lakes, where mud and sit have been continuously deposited,
所以只有在泥沙不停淤积的海洋和江河里，有时在湖泊里，