Phosphinate
亚膦酸盐, 亚膦酸酯
🗣️ 情景例句
What's wrong?
怎么了？
I'm sorry, but I didn't understand your question. Could you please restate it?
对不起，你的问题我没有理解，请你再说一遍好吗？
'I told you yesterday and the day before yesterday,' he shouted,
“我昨天和前天都告诉过您了，”他大叫着，