Decolorite
多孔阴离子交换树脂
🗣️ 情景例句
No one knows for certain what happened, but it's a fair bet that it was not an accident.
没有人知道究竟发生了什么，但几乎可以肯定这并非意外。
Anything else you want to bring up for discussion.
你还有什么问题要提出来供双方讨论的吗？
Have you received a letter from Jim yet?
你收到了吉姆的来信没有？