He made a difficult climb.

他作了一次艰难的攀登。

《新英汉大辞典》

It's not a difficult climb.

这次攀登并不难。

youdao

Achievement as slide, a very difficult climb, slide down but in an instant.

⊙、成绩就像滑滑梯，爬上去很难，滑下来不过一瞬间。

youdao

They had made a difficult climb from the southeast, through recently opened Nepalese territory.

VOA: special.2010.06.30

The rocks are very difficult to climb.

VOA: special.2009.07.20

If this is truly the beginning of the housing recovery, investors can expect a gradual and difficult climb that will last several years.

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He quickly established himself as one of the world's best climbers, in 1964 making the first ascent of the North America Wall of Yosemite's El Capitan--regarded at that time as the most difficult climb in the world.

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It makes it more difficult to climb out of the abyss.

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