1. During the expedition, they trekked ten to thirteen hours a day. 在探险期间，他们每天都要走十到十三个小时。
2. They trekked from shop to shop in search of white knee-high socks. 他们疲惫地奔波于一家又一家商店，寻找高到膝盖的白色长筒袜。
3. Then in the summer of 2009, he trekked about 670 miles from Atlanta to Washington, in just two months. 2009年的夏天，他从亚特兰大长途跋涉到华盛顿，全程670英里，只用了两个月的时间。
4. Earlier this year, British explorer Pen Hadow and his team trekked for three months across the frozen Arctic Ocean, taking measurements and recording observations about the ice. 今年年初，英国探险家佩恩·赫德尔和他的团队在冰冻的北冰洋上跋涉了三个月，对冰层进行了测量和记录。
5. They trekked through the desert for 3 months. 他们在沙漠里长途跋涉达三个月。
