The army was dispirited by the uncomfortable winter conditions.

军队因为冬季环境不适而士气不振。

Will this car stand up to winter conditions here?

这汽车经得起这儿冬天的气候条件吗?。

Your body temperature increases as you run so you don't need many layers in most winter conditions.

当你跑步的时候你的体温会上升，所以冬天在大多数情况下你无须穿太多层。