Some of them can loiter in the air for long periods.

一些无人机可以长时间的在空中盘旋。

youdao

Workmen shall be confined to the area under renovation and will not loiter in other areas.

施工人员将在指定区域内施工，严禁闲逛于其他地方。

youdao

Its a big number, but it is impossible to know how many will loiter in your digestive system.

这个数字是很大的，但你不可能知道有多少真菌只是在你的消化系统中闲逛。

youdao

Researchers disinclined or unable to loiter in polling stations are increasingly drawn to statistical means of detecting fraud.

ECONOMIST: Election fraud

The Predator, however, may be supplanted in any Gulf war by the Global Hawk, which can loiter for more than 24 hours at high altitude over a battlefield.

ECONOMIST: Military technology