Cationite
阳离子交换剂
🗣️ 情景例句
That would be find.
那好。
There is no friend so faithful as a good book.
最忠实的朋友莫过于一本好书。
They invariably lie nearby and are always available for an informal chat or an evening's entertainment.
因为他们都住在附近，你随时可以同他们聊天或在晚上一起娱乐。