The greatest seasonal change on our planet is underway. 我们这个行星上最显著的季节变化正在发生
Nowhere else on Earth is seasonal change so extreme. 两极地区的季节变化非常极端
Yet all this can change in an instant. 然而所有这一切即刻就将发生改变
But to live here lions have had to change their habits - 而若想在此生存 狮子必须改变它们的习性
For others the change is far less welcome. 而有些动物却不是很喜欢这种改变
The advance of the seasons brings constant change. 世间万物随着季节的变迁不断改变