| 例句 |
Dark matter gives out no light and is detectable only because of its gravitational effect on visible matter.暗物质不发光，它之所以能被发现，只是因为它对可见物质产生引力作用。The gravitational pull of the earth attracts objects to it.地球的引力使得它能吸引物体。The Moon exerts a gravitational pull on the Earth, creating tides.月球对地球有引力，从而产生了潮汐。The greater the mass of an object, the greater its gravitational pull.物体的质量越大重力也就越大。All matter exerts a gravitational attraction.所有的物质都有引力。The planet has a strong gravitational pull.这颗行星有很强的引力。Its oscillation depends on the strength of the gravitational field.它的振动幅度取决于引力场的强度。 |