ha ha [感叹词] 哈哈 Ex: Ha ha , I wish I was there when you slipped on the banana peel . 哈哈,我真希望在你踩到香蕉皮滑倒的时候我在场。
oh boy [感叹词] 天啊 Ex: Oh boy , they 're releasing a new Harry Potter book next month ! 哦,天哪,他们下个月要出一本新的哈利波特书!