It may not seem like it, but as you sit here now you are pulling everything around you-walls, ceiling, lamp, pet cat-toward you with your own little (indeed, very little) gravitational field.

这似乎不大可能，但当你在这里坐着的时候，你在用你自己小小的（的确很小）引力场吸引你周围的一切事物--墙壁、天花板、灯、宠物猫。