Dioxygen
二氧, 分子氧
🗣️ 情景例句
I wonder if you would take a look at the old library
我不知道你是否可以看一看旧图书馆
What would you like to do today?
今天你想做什么？
She does, doesn't she! I read she's twenty-nine,- but she must be at least forty.
是的，谁说不是呢！我从报上看到她是29岁，但她一定至少有40岁了。