Mister Chu said sunlight,and its heat, will bounce off a white colored roof.

VOA: special.2009.06.19

The body is having all sorts of light bounce off my eyes of various wavelengths.

身体可以通过不同的,波长把光线反射进我的眼睛

耶鲁公开课 - 死亡课程节选

and have everyone come up with different ideas, and then you can bounce ideas off each other and

每个人都能提出不同的想法，你们可以互相讨论各自的观点，

要做好角色分担 - SpeakingMax英语口语达人