As we took a ride through the park's dark jungle, we could see the eyes of many creatures looking at us.
when引导的是非限制性定语从句,修饰winter 不是时间状语从句。 时间状语从句可位于句首的。 译: 现在已经准备好在冬天喂马和牛了,在冬天的时候田野里没有草给它们吃