电视广告反复再三重播，以便让观众和听众多次看多次听。

Television ads are shore -usually only 15, 30, or 60 seconds, but they are repeated over and over again so that the audience sees and hears them many times.

youdao

唯一的可能是他们在表单中需要它们，是同一个用户反复再三做不同输入的时候，即一旦你使用了“重置”，也就意味着为用户提供了一个撤回功能。

The only time it's called for is in a form that the same user USES over and over again with different input. If you use a Reset, also try to provide an undo function.

youdao