Idiom: "(to) hang around"
Definition:
to spend time idly
Examples:
1) We had to spend an extra 3 hours hanging around the bus station because our bus was delayed.
2) I hung around at my friend’s place until it was time for me to go to work.
中文解释:http://www.youzienglish.com/main/idiom_of_the_day/to_hang_around/cn/