gravity
n.重力，地心引力;严重;严肃，庄重
the force of gravity重力
grieve
vi.(for，over)感到悲痛 vt.(使)伤心
People need time to grieve after the death of a loved one.
人们在所爱之人去世后会有一段悲伤的时间。
hinder
vt.阻碍，妨碍
His career has been hindered by injury.
由于受伤，他的事业受到了阻碍。
hint
n.暗示;细微的迹象[ pl.]建议 v.暗示
There have been hints that he may take up coaching.
有一些迹象表明他可能出任教练。
impact
n./ v.影响，作用;冲击，碰撞
Higher mortgage rates have already had a major impact on spending.较高的抵押借款利率已经对消费产生了巨大的影响。
