树对我们人类是多么的重要和有用

　　Planting trees

　　Trees are very helpful and important for us. （树对我们人类是多么的重要和有用。）We should plant more and more trees in order to live better and more healthy in the future. （为了将来我们的生活过得更好、更加健康我们应该种更多的树。）It’s everyone’s duty to love and protect the environment.（爱护和保护环境是每个人的责任和义务。）作