Iec
[化] 离子交换色谱法
🗣️ 情景例句
What is the most important thing for you to be happy?
你认为对你来说开心最重要的是什么？
Thank you.
谢谢。
In this much-travelled world, there are still thousands of places which are inaccessible to tourists.
在这个旅游频繁的世界上，仍有成千上万个游人足迹未至的地方。