trek

1. V-I If you trek somewhere, you go on a journey across difficult country, usually on foot. (艱難地) 徒步旅行

...trekking through the jungles. …徒步穿越叢林。

2. N-COUNT Trek is also a noun. 徒步旅行

He is on a trek through the South Gobi desert. 他正徒步穿越南戈壁沙漠。

3. V-I If you trek somewhere, you go there heavily and unwillingly, usually because you are tired. 疲憊地行走

They trekked from shop to shop in search of white knee-high socks. 他們疲憊地奔波于一家又一家商店，尋找高到膝蓋的白色長筒襪。