gravitation 四级六级

We owe to Newton the principle of gravitation.

万有力原理发现应归功于牛顿。

By gravitation the sun and planets act and react upon one another.

太与行星通过力发挥作用并相互影响。

The sun’s gravitation was bending the beam of light.

太力使光束弯曲。

It is gravitation that causes the apple to fall.

是地心吸力使苹果下落。

The Coulomb-force in a star is equal to 3.4 octillion times of universal gravitation (neglect the effect of electricity charge tending to the surface).

因为这个斥力也会比万有力大3400亿亿亿倍（忽略电荷趋肤效应）。