trek ·noun
Definition: a long, difficult journey that you make by walking Level: C1
穿越喜马拉雅山的长途徒步既充满挑战又收获颇丰。
The ___trek through the Himalayas was both challenging and rewarding.
经过两天穿越丛林的艰苦长途徒步，我们终于到达了那个偏远的村庄。
After a grueling two-day ___trek through the jungle, we finally reached the remote village.
许多冒险家梦想完成前往珠穆朗玛峰大本营的长途徒步。
Many adventurers dream of completing the ___trek to the base camp of Mount Everest.