Nalcite
离子交换树脂
🗣️ 情景例句
It was very thoughtful of you to send flowers.
你送花来，想得真周到。
My brother took lessons on the trumpet for nearly ten years.
我的兄弟有将近10年的时间听小号的课了。
He sent yet another fax informing the journalist that if he did not reply soon he would be fired.
于是他又发了一份传真，通知那位记者说，若再不迅速答复，将被解雇。