我知道，有个道理你们已经听过成千上万次了。但那是真的：艰辛的工作带来回报。如果你希望好起来，你就必须练习、练习，再练习。
I know you've heard it a thousand times before. But it's true-hardwork pays off. If you want to be good, you have to practice, practice, practice.
循环经济原则可以将林业部门的废物转化为价值。
The writer must be a person who is willing to take risks.