1 a long hard walk, lasting several days or weeks, usually in the mountains 翻山越岭；长途跋涉

2 (informal 非正式) a long walk 远足；长距离行走: It's quite a trek to the shops. 要走颇远才到商店区。 trek verb [I] (trekking;trekked) We use go trekking to talk about walking long distances for pleasure. 进行当作乐事的长途跋涉可以叫做go trekking。