O2
[医] 氧(8号元素); 两眼
🗣️ 情景例句
and remember the meaning of Thanksgiving.
来追忆一下感恩节的意义。
He has never been out of China, so he is very excited about liveing abroad.
他以前从未出过国，因此对出国很兴奋。
Do you like coffee, Ann?
你喜欢咖啡吗，安？