“重力”造句

任何有较强重力的物体都会对其他物体产生引力。
Anything with strong gravity attracts other things to it.

重返大气层的航天器受到重力的作用。
Spacecraft which are re-entering the earth's atmosphere are affected by g forces.

由于重力的关系,苹果往下掉.
An apple falls down because of gravity.