hills
A hill is an area of land that is higher than the land that surrounds it.
the shady street that led up the hill to the office building.
通往山上的办公楼的林荫道。
over the hill
If you say that someone is over the hill, you are saying rudely that they are old and no longer fit, attractive, or capable of doing useful work.
He doesn't take kindly to suggestions that he is over the hill.
他不爱听别人说他在走下坡路。