By gravitation the sun and planets act and react upon one another.太阳与行星通过引力发挥作用并相互影响。He also propounded the Heliocentric theory of gravitation, thus predating Copernicus by almost one thousand years.他也提出以引力作用为基础的日心说, 比哥白...
She tried hard to slough off her old personality.她努力告别从前的个性。All reptiles have to slough their skin to grow.所有爬行动物生长过程中都要蜕皮。He was sinking into the Slough of Despond.他那时正陷入极度沮丧的状态。...
在这条荒野的小路上隐伏着危险.Dangers lurk in the path of wilderness.这些保护荒野的人们的愿望是把荒野区域转变成公有物.These individuals'desire for wilderness preservation converts wilderness areas into public goods.这片荒野的面貌一点也没改变.There was no change in th...