Polysulfonate
多磺酸盐
🗣️ 情景例句
Have you ever been to Nanjing?
你曾去过南京吗？
You're forgiven.
那就原谅你吧。
He encouraged Indians to start making their own cotton cloth and to refuse to buy cloth made in England.
他鼓励印度人民自己着手纺纱织布，并拒绝购买英国纺织的棉布。