O2
[医] 氧(8号元素); 两眼
🗣️ 情景例句
I still don't understand what you mean.
我还是弄不懂你是什么意思。
Just to be on the safe side.
为安全起见。
He discovered that there was a group in the east of the country that shared the same family name - Kinte.
他发现在该国的东部有一个家族都姓肯特。