The descent of the mountain took two hours.是什么意思？

The descent of the mountain took two hours.

下山花了两个小时。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

descent

n. 下降，血统，倾斜；

例句
Sixteen of the youngsters set off for help, but during the descent three collapsed in the cold and rain.
16 名年轻人出发去寻求帮助，但在下山过程中有 3 人因寒冷和大雨晕倒了。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

mountain

n. 山，山岳，山脉，一大堆，大量；

例句
The truck sways wildly, careening down narrow mountain roads.
卡车疯狂地左摇右晃,从狭窄的山路上急冲而下。

took

v. 拿( take的过去式 )，接受，学习，取得；

例句
The interview took place on a Friday afternoon...
采访是在一个星期五的下午进行的。

two

n. 两个，两个东西，两点钟，一对；adj. 两个的，我

例句
He has been absent from his desk for two weeks...
他已经有两个星期没有坐在办公桌前了。

hours

n. 小时( hour的名词复数 )，固定时间，一小时的时间或行程，重要时刻；

例句
The workforce have recently been calling for their working hours to be reduced. Many companies have accordingly switched to a five-day week.
工人们最近一直在呼吁缩短工作时间。许多公司于是转成了一周五天工作制。