dawdle over something:在(某事上)浪费(时间),闲混(时间),虚度(光阴);在(工作)中拖拖拉拉,慢吞吞地干(工作等),拖延;偷懒
to waste time when one should be doing a particular task; to loaf while doing something.
Don't dawdle over your makeup, we don't want to be late for the concert.
你别慢吞吞地化妆,我们不想音乐会迟到.
Don't dawdle over your hamburger.
The lunch period ends in two minutes. Don't dawdle over it. Get it done.