O2
[医] 氧(8号元素); 两眼
🗣️ 情景例句
Well, I ...
好啦， 我……
To step on
踩到
It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash.
不久，一架直升飞机飞抵飞机失事现场，来搭救这几个幸存者。