They had to escalade canyons to reach their destination.是什么意思？

They had to escalade canyons to reach their destination.

他们必须爬上峡谷才能到达他们的目的地.

they

pron. 他/她/它们，人们，大家，政府，当局，她们；

例句
The storms had abated by the time they rounded Cape Horn.
他们绕过合恩角时，暴风雨已经减弱。

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

escalade

v. 攀登；n. 活动人行道；

例句
Why don't you bring me a Escalade or something to get back in my good graces?
你为什么不给我找个台阶下看看能不能原谅你们 呢 ?

canyons

n. 峡谷( canyon的名词复数 )；

例句
They had to escalade canyons to reach their destination.
他们必须爬上峡谷才能到达他们的目的地.

reach

v. 到达，走到，够…，抓…，完成；n. 手脚能够到的范围，范围，区域，影响的范围，管辖的范围；

例句
He said it would not be all that difficult to reach a peaceful conclusion to the conflict.
他说和平解决这一冲突并不会太困难。

their

pron. 他（她，它）们的，在提及性别不详的人时，用以代替 him 或 her；

例句
Their permissiveness toward their children reflects the wild abandon of their own lives.
他们对孩子的放任折射出他们自身生活的放浪形骸。

destination

n. 目的，目标，目的地，终点，[罕用语]预定，指定；

例句
His destination was Chobham Common, a long way from his Cotswold home...
他的目的地是乔伯姆公地，那里和他在科茨沃尔德的家离得很远。