O2
[医] 氧(8号元素); 两眼
🗣️ 情景例句
He sees her often but doesn't want to get too involved.
他常与她来往，但不愿用情太深。
Her parents don't approve of me and want her to forget me.
她的父母不赞成我们，想要她忘记我。
If you think it is necessary.
如果你认为有这必要的话。