A group of students picks up litter in the park to keep the environment clean.
A Dirty Park
星期天，老师带学生去。
On Sunday, the teacher took the students to the park.
Teacher
你们看，这里有很多东西。
Look, there's a lot of trash here.
Student
老师，我们一起，好吗？
Teacher, let's clean it up together, shall we?
Cleaning Up Together
Teacher
好。里有树有花，我们要它们。
Okay. The park has trees and flowers, and we need to protect them.
学生们做了两个小时，了。
The students worked for two hours, and the park became clean.
Student
现在真漂亮！
Now the park is really beautiful!
An Important Lesson
Teacher
很。
Protecting the environment is very important.
Student
以后我们不会乱放东西了。
From now on, we won't litter anymore.
大家都觉得今天的工作很。
Everyone felt that today's work was very meaningful.