verb · to inadvertently do something that has an unpleasant result, such as buying a poor quality product or visiting a bad restaurant

看网上的评价买了这家店的饭，结果又踩雷了。

to step on a landmine literally

在战区行军时，最担心的就是踩雷。

to be accidentally exposed to a plot spoiler for a movie, book, or show

为了怕踩雷，电影首映前我都不敢刷朋友圈。