短语
中文翻译：上下坡路
同义词：
['hill', 'slope', 'uphill', 'downhill']
例句：
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1.The hikers were going up and down the hill.
登山者正在上上下下山坡。
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2.He was walking up and down the slope, trying to find a way out.
他正沿着山坡上下行走，试图找到一条出路。
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3.The car was driving up and down the slope, getting stuck in the mud.
汽车正沿着山坡上下行驶，陷入泥潭。