But there are parts of the world that have no seasons. 但是 世界上有些地方却没有四季
In the tropics the sun's rays strike the earth head on 在热带地区 太阳辐射直射大地
300,000 Baikal teal gather to escape from the Siberian winter by migrating south to Korea - 30万只花脸鸭集体迁往南方的韩国 躲避西伯利亚的严冬
As the sun's influence diminishes in the north, 在北方 随着太阳影响力的减弱
so the deciduous forests of America begin to shut down 美洲落叶林开始放慢生命的脚步
losing their leaves in preparation for the dark cold months ahead. 它们落下树叶 以应对即将到来的几个月的严寒和黑暗
The earth, as it makes its annual journey around the sun, 地球每年绕着太阳公转
And it's this tilt that creates the seasons. 正是这种倾斜造成了季节变化
The advance of the seasons brings constant change. 世间万物随着季节的变迁不断改变
ultimately depend for their energy on the sun. 归根结底都依赖于太阳的能量