哈哈 用英语怎么说

"哈哈" 用英语可以翻译为 "haha"。它是用来表示笑声的，来源于人类的声音。例如：
"I laughed so hard when I saw the funny cat video. Haha!" (我看到那个搞笑的猫视频时笑得好笑。哈哈！)
"She told me a joke and I couldn't help but laugh. Haha!" (她给我讲了一个笑话，我禁不住笑了出来。哈哈！)
"I'm so happy to see you. Haha!" (看到你我很高兴。哈哈！)