Unemployment is 9.5 percent in the United States, and Mr.Obama says hiring is usually one of the last areas of a struggling economy to bounce back.

VOA: standard.2009.07.14

If you're hit, you might feel pain or bounce back or something.

如果被打了，你会感到疼痛,或是迅速恢复。

耶鲁公开课 - 心理学导论课程节选

The short wave signals bounce off the ionosphere that surrounds the Earth,back to the ground and then back to the ionosphere.

VOA: special.2010.12.08