Polysulfonate
多磺酸盐
🗣️ 情景例句
My feeling is that you ought to stay home tonight.
我觉得今晚你应该呆在家里。
What time does the first train to Boston leave?
第一班去波士顿的列车什么时间开出呢？
She was taking the things out of the basket when she dropped a bag of sweets.
她把东西从篮子里拿出来，这时，一袋糖从她手里掉地了。