a type of motorsport in which drivers compete to see who is the fastest on a route which goes up a hill

Cars from 1895 to the present day do a bit of hill climbing in front of 150,000 spectators. 各种从1895年到现在的汽车在150,000名观众面前表演了山道车赛。

This season there's a flurry of new, front-running cars using engines never seen in hillclimbing before. 本赛季出现了一系列新型车参加山道车赛，它们装备了既往比赛从未见过的发动机，而且是前轮驱动的。

a sport in which cyclists (= people riding bicycles) compete to see who is the fastest on a route which goes up a hill

Altogether, he won nearly 300 cycle racing prizes for road, track and hill climbing. 他总共赢得了近300个自行车比赛奖项，包括公路赛、场地赛和爬坡赛。

Hill climbing is a uniquely British form of time-trialling. 自行车爬坡赛是一种独特的英国计时赛。

the activity of walking for pleasure in areas with a lot of hills

What followed were many happy years with her beloved husband walking and hill climbing. 接下来是与她心爱的丈夫一起散步爬山的许多快乐岁月。

Even though it was cool with a nice breeze, the hill climbing took its toll on us. 尽管微风凉爽，但爬山仍让我们感到不适。

a mathematical method used for solving difficult problems that have several possible solutions by repeatedly improving previous solutions

One successful approach makes use of a hill climbing approach by swapping those two entries that make the strongest progress towards minimising the penalty. 一种成功的方法是使用爬山算法，将两个在最小化惩罚方面取得最大进展的条目进行交换。

Optimization approaches include hill climbing, stochastic search, directed stochastic search, and hybrid methods. 优化方法包括爬山算法、随机搜索、定向随机搜索以及其他混合方法。