英汉词典

1. （引出答话或评语）哦，噢
    You use oh to introduce a response or a comment on something that has just been said.

    e.g. 'Had you seen the car before?' — 'Oh yes, it was always in the drive.'...
           “之前你见过那辆车吗？”——“哦，见过，它总是停在车道上。”
    e.g. 'Would you like me to phone and explain the situation?' — 'Oh, would you?'...
           “你需要我打电话解释一下情况吗？”——“哦，可以吗？”

2. （表示惊讶、痛苦、恼怒或喜悦等）唉，啊，呀，哈
    You use oh to express a feeling such as surprise, pain, annoyance, or happiness.

    e.g. 'Oh!' Kenny blinked. 'Has everyone gone?'...
           “啊！”肯尼眨了眨眼睛，“人都走了吗？”
    e.g. 'Oh, my God,' Korontzis moaned...
           “哎呀，我的天啊，”科龙齐斯呻吟道。

3. （表示犹豫）呃，嗯
    You use oh when you are hesitating while speaking, for example because you are trying to estimate something, or because you are searching for the right word.

    e.g. I've been here, oh, since the end of June...
           我是，呃，6月底来到这里的。
    e.g. The invaders have destroyed the, oh, I don't know what the right word is—the atmosphere, the ambience.
           入侵者破坏了，嗯，我不知道用什么字眼好——气氛，氛围。