Oxozone
四聚氧, 双氧气
🗣️ 情景例句
I'm going to hire an interior decorator to look the place over.
我要请一个室内装需工程师来看看这个地方。
Who is speaking?
请问是谁打来的？
When will you have more?
什么时候你们会再进货呢？