跑一英里路，满载食杂用品的大型卡车与只带了一袋色拉的休闲越野车所耗能源是截然不同的。
A mile travelled by a large truck full of groceries is not the same as a mile travelled by a sport-utility vehicle carrying a bag of salad.
经常混合路跑的，又不想牺牲越野跑抓地力的跑者。
Recommended for trail runners who frequently mix in some roads and don't want to sacrifice off-road traction.
越野跑的路线是一段围绕着学校弯弯曲曲的路，还要穿过附近的牧场(当然，事先已经取得了主人的许可)。
The course lay out for the cross-country track took a meandering path around the school, then out into the pastures around the school (with the permission of the farmers, of course).
越野跑的路线是一段围绕着学校弯弯曲曲的路，还要穿过附近的牧场(当然，事先已经取得了主人的许可)。
The course lay out for the cross-country track took a meandering path around the school, then out into the pastures around the school (with the permission of the farmers, of course).
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