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- What is the force of gravity at sea level? 海平面的地球引力多大?
- The force of gravity pulls things towards the earth's centre. 地心吸力把物体吸向地心。
- The force of gravity makes things fall to earth. 地心引力使物体落向地面。
- Anything that is dropped falls towards the ground because of the force of gravity. 落下的东西因为地心引力的缘故，都会掉到地上。
- The earth is pulled towards the sun by the force of gravity. 太阳靠引力作用把地球吸引着。
- The force of gravity pulls everything towards the earth's centre. 地心吸力把物体吸向地心。
- Obviously the force of gravity Mg is acting vertically downward. 显然重力的Mg作用垂直向下。
- At that speed, the pressure is three times the force of gravity. 飞机以这种速度飞行，压力等于地球引力的三倍。
- 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。
- Anything that is dropped falls to the ground,pulled by the force of gravity. 任何跌落的物体均被地心吸力所吸引而落向地面。
- The rocket must go fast enoughround the earth to balance the force of gravity. 火箭必须围绕地球运行得足够快以抵消地心引力。
- The force of gravity is with us all the time, though we may not feel it. 地球引力无时无刻不存在,尽管我们可能感觉不到它。
- Anything that is dropped falls to the ground, pulled by the force of gravity. 任何跌落的物体均被地心吸力所吸引而落向地面。
- Napoleon conquered by the force of an iron will. 拿破仑攻无不克靠的是坚强的意志。
- Moreover it is ready to act effortlessly with the combined help of the force of gravity and the muscles. 此外在地心引力和肌肉的配合下,它可毫不费力地准备弹奏。
- 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。
- The force of gravity also contributes to the downward motion but the main source of energy is one's own muscles. 地心引力也帮助向下运动,但能量主要还是来自于自己的肌肉。
- The force of gravity is always present, and will help us if we allow it to do so. 地心引力是总是存在,如果我们承认它的存在,它就可能助我们一臂之力。
- Finally, the hatch opens and, unaccustomed to the force of gravity, you stagger out amid venting waste gases. 终于，舱门打开，你蹒跚着（由于不习惯于重力作用）随舱内涌出的污浊气体走了出来。
- The force of his fall was broken by the straw mat. 草垫的缓冲作用减弱了他下跌的力量。
