trekking
US /ˈtrek.ɪŋ/
UK /ˈtrek.ɪŋ/

1.
徒步旅行, 长途跋涉
the activity of going on a long, arduous journey, typically on foot
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They went trekking in the Himalayas for three weeks.
他们在喜马拉雅山徒步旅行了三周。
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Our next adventure is a trekking trip through the Amazon rainforest.
我们的下一次冒险是穿越亚马逊雨林的徒步旅行。
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