用mill around造句子，“mill around”造句

Galaxies can also have modest local motions as they mill around and gravitationally pull on one another— as the Milky Way and Andromeda are doing.

The normal behavior of the crowd is to mill around, make noise, and go nowhere.

A few bored policemen mill around outside a building the size of an aircraft hangar, outside which bobs a large balloon with the WWF panda on it.