dawdle away

• 混(日子)，浪费(时间)，虚度(光阴)：

  We've dawdled the whole morning away arguing over the smallest issues!

  我们为极小的问题争论，已经浪费了整个上午了!

  The teacher told the students not to dawdle away their time.

  老师告诉学生们别混日子。