Varion
一种离子交换树脂
🗣️ 情景例句
Well, he's here with his daughter to have lunch.
嗯， 他和他女儿已到这里等吃午餐了。
I'd like two seats on today's northwest flight 7 to detroit, please.
我想订两张今天西北航空公司7班次到底特律的机票。
How do you do?
你好。