trek

vt. 艰苦跋涉(行军)
n. 艰苦跋涉

Steve and Jack gave a talk about their trek across the Polar ice cap. It was very interesting but it made my hair stand on end just to hear about the dangers they faced.

史蒂夫和杰克讲述了他们在极地冰盖的一段艰苦跋涉，故事津津有味，只是听到他们遇到种种险情时，我吓得很。

It took the climber a month to trek to the foot of the mountain before they even started their climb.

登山者还未开始爬山，光是艰苦地跋涉到山脚下就花了1个月时间。