Cut a tree, and you see circles.
把树锯开，就能看到一圈圈的纹。
These rings are the tree's diary.
这些年轮，就是大树写的日记。
Each ring stands for one year.
每一圈，都代表一整年。
Wide rings mean a rainy, happy year.
圈宽的年头，雨水足，过得舒服。
Thin rings mean a dry, hard year.
圈窄的年头，干旱少雨，日子难。
Scientists read rings to learn old weather.
科学家读年轮，就知道古时候的天气。
The tree never forgets a single year.
这棵树，哪一年都不会忘。
