"So many kids got see two African-American men floating around in space.."

VOA: standard.2010.02.02

Likewise, when in outer space, when you are orbiting the Earth, people are always floating around in these space stations.

就好比在外太空,当你在绕地球运行时,宇航员总是悬浮在太空站

耶鲁公开课 - 基础物理课程节选

Likewise, when in outer space, when you are orbiting the Earth, people are always floating around in these space stations.

就好比在外太空,当你在绕地球运行时,宇航员总是悬浮在太空站

耶鲁公开课 - 基础物理课程节选