险峻的英文：
arduous
steep

参考例句：

The intimidating bulk of Mt Everest rose up before the climbers.
登山者面前耸立着险峻的埃佛勒斯峰（即珠穆朗玛峰）。

Sharp, angular cliffs
险峻嶙峋的峭壁

Qutang Gorge is celeb rated for its majestic steep crags on both banks of the fiver.
瞿塘峡雄奇险峻。

On one side, the mountains rise steeply.
在路的一边，山体高耸险峻。

sharp,angular cliffs;a sharp nose.
险峻嶙峋的峭壁;尖削的鼻子

The structure of the characters varies a lot compared with those in the zhuan style.
结体或险峻跌宕，坚挺雄健

Greatness is an eminence, the ascent to which is steep and lofty.
伟大是一种声誉，攀登上去是陡峭而险峻的。

We finally clambered up the precipitous cliff.
我们终于登上了险峻的峭壁。

He saw high land to the south-west, and standing out towards it, discovered the bold headland.
他在西南方向发现了一块高地，正对着的海岬极为险峻。

The mountains on either side were high, rough and barren, very black and gloomy in the shadow of the clouds.
两面的山高而险峻，草木不生，在云层的影子下显得格外的黑暗和阴郁。

arduous是什么意思：
adj. 费力的，辛勤的，险峻的

Success is the fruit of arduous striving.
成功是奋斗的结果。

They are very glad that they have been assigned the most arduous task .
他们很高兴被派给最艰巨的任务。

His timidity disinclined him from such an arduous enterprise
他的怯懦使他不愿从事一项如此艰巨的事业。

He mastered these words through the arduous consultation of the dictionary.
通过勤查字典，他掌握了这些单词。

It must have been a very arduous task to build the pyramids.
当时建造金字塔肯定是件万分艰钜的事。

steep是什么意思：
adj. 陡的，急剧升降的；过分；过高
v. 浸，泡

The roof has a steep pitch.
屋顶很陡。

The lake was shadowed by the steep cliffs.
陡峭的悬崖把湖笼罩在阴影里。

You have to steep this tea in hot water.
你必须把这包茶叶泡在热水中。

The road has a steep incline.
这条路有个很陡的斜坡。

The car bucketed down the steep road.
汽车在陡峭的路上东倒西歪地前进。