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- The force of gravity pulls things towards the earth's centre. 地心吸力把物体吸向地心。
- Our pilotless rocket enters the track of the earth. 我们把一个无人驾驶的火箭送入了地球的轨道里。
- The attraction of the earth for other bodies is called the force of gravity. 地球对其它物体的吸引称为地心引力。
- The attraction of the moon for the earth causes the tides. 月球对地球的吸引力造成潮汐。
- The destructive force of the storm is huge. 暴风雨的破坏力是巨大的。
- The great force of the meteor hitting the earth left a very big hole. 流星下落时的巨大冲力撞击到地面上，形成了一个大大的坑。
- The force of friction affects the speed at which spacecraft can re-enter the earth's atmosphere. 摩擦力能影响航天器返回地球大气层的速度。
- What percentage of the earth is covered by oceans? 地球上百分之多少被海水覆盖着？
- The heated air drinks up the moisture of the earth. 热空气把土里的湿气都吸干了。
- The force of the explosion broke all the windows in the building. 爆炸的力量震碎了这座建筑上的所有窗户。
- What is it like in the bowels of the earth? 地球内部是什么样子？
- The tower was blown to atoms by the force of the explosion. 爆炸的力量把塔炸得粉碎。
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- Deflecting force of the earth 地球偏向力
- The car was completely wrecked by the force of the collision. 这辆汽车受到很大的撞击力而完全损坏。
- The bird-song is the echo of the morning light back from the earth. 鸟的歌声是曙光从大地反响过去的回声。
- Gravity, the force of the earth's attraction, governs the atmosphere just as it governs solid objects. 引力,即地球的吸引力,正象它影响着固体那样影响着大气。
- They think of themselves as the salt of the earth. 他们自认为是社会中坚。
- The force of the wind is measured on a standard scale of 0-12. 风力是按0-12级标准等级测量的。
- The force of gravity is not constant everywhere for elliptical form and rugged surface of the earth. 由于地球的椭圆形状及其高低不平的表面，重力不是到处都一样的。
