| 例句 |
The moon was a silvery orb.月亮是一个银色的球体。The earth is not a perfect sphere.地球不是一个很圆的球体。All points on a sphere are the same distance from the center.球体表面所有的点到球体中心点的距离都相同。The earth is not perfectly spherical.地球不是个正球体。Newton's theories allow us to predict the flight of a ball.牛顿的理论让我们可以预测球体的飞行路线。Comets are balls of ice and dirt that circle the sun.彗星是冰和尘埃组成的球体，围绕太阳而行。 |