Phosphonate
膦酸盐, 膦酸酯
🗣️ 情景例句
He knows all there is to know,
他无所不知，
Adversity leads to prosperity.
逆境迎向昌盛。
How would you go to Beijing, by air or by train?
你怎样去北京，是乘飞机还是坐火车？