看到那个搞笑视频后，他在评论区打了一连串的哈哈哈。

After watching the hilarious video, he typed ___ha-ha-ha-ha repeatedly in the comments.

她声称自己完成了所有工作，我只是回复了'ha-ha-ha-ha'表示不信。

When she claimed to finish all the work, I just replied '___ha-ha-ha-ha' in disbelief.