Do not idle about like this and do something useful.

别再这样闲混下去了，做些有益的事吧！

《新英汉大辞典》

I hate you to idle about.

我不喜欢你游手好闲。

youdao

We must not idle about because it is hot.

我们约不能因为天气热，就游手好闲。

youdao

Many of those who idle about for the full two years do so because they face intractable problems, such as drug addiction, homelessness and early childbearing.

ECONOMIST: Education reform: Must try harder | The

There has been, at various times, idle speculation about a wide-range of intriguing but highly unlikely potential suitors.

FORBES: Why RIM Won't Be Bought: There's Not Much There There

There is quite a lot of idle talk about the world not ending on 1 March and that everything will be sorted out in a couple of weeks.

BBC: US naval workers all at sea as sequester looms