"We spent the summer trekking in the foothills of the Himalayas"
"They trekked towards the North Pole with sleds and skis"
Every time we wanted water it was a trek.
It would mean trekking down to the kitchen again.
牛津高阶第八版
美国韦氏词典
Dictionary.com
Free Dictionary
维基百科 (自由的百科全书)