Gravity-

1.重力；地球引力the force that attracts objects in space towards each other, and that on the earth pulls them towards the centre of the planet, so that things fall to the ground when they are dropped

2.严重性extreme importance and a cause for worry

3.严肃；庄严serious behaviour, speech or appearance

1.【物】重力,引力,地心吸力

2.重要性,严重性;危险性

3.认真,严肃,庄重

4.重量

5.【乐】(音调的)低沉

1.the force that makes any two objects that have mass move toward each other. The most common example of this is when an object falls to the ground

2.the seriousness or importance of something

3.a serious attitude