孩子们整个下午都在花园里瞎闹，用旧纸箱搭了个窝。

The kids spent the afternoon ___messing ___around in the garden, building a den from old boxes.

她和朋友们待了一天，就只是瞎晃悠。

She'd spent the day with friends, just ___messing ___about.

她的老板警告她，在工作时间无所事事可能会影响她的绩效评估。

Her boss warned her that ___messing ___about during work hours could affect her performance review.