1. Maybe the ground vibrates, or maybe the ground itself is shifting, tilting. 也许是地面震动了,或者是地面本身在移动和倾斜。
2. The earth's not always the same distance from the sun, and it's not always tilting toward the sun at the same angle. 地球到太阳的距离并不总是相同的,地球也并不总是以相同的角度倾斜向太阳。
3. Numerous ideas were submitted for the project, including concepts ranging from rolling eggs to tilting tanks, from giant seesaws to overhead monorails. 许多人为该项目提供了想法,包括从滚动的鸡蛋到倾斜的坦克,从巨大的跷跷板到空中单轨铁路等概念。