求翻译：学校计划在3月10日星期六有一次环保活动。地点在公园，学习怎样保护环境，要求学生上午九点在学校门口集合，上午植树，下午做卫生，自带午餐。是什么意思？

School programs in the March 10 Saturday once environmental protection activities. Locations in the park, learning how to protect the environment, require students to nine o'clock at the school gate collection, tree planting morning, afternoon, do health, own lunch.

On 10 March, the school plan Saturday once environmental protection activities. At the park place to learn how to protect the environment, and required that students 9:00 a.m. in tree planting, school gate morning afternoon, doing public health, bring their own lunch.

The school plan Saturday has an environmental protection activity in March 10.Does the place in the park, how study protects the environment, requests the student in the morning nine in the school entrance set, plants trees in the morning, makes the health in the afternoon, the bringing lunch.

School program on Saturday, March 10 at a time of environmental protection activities. Locations in the Park, learn how to protect the environment, students at nine o'clock in the morning at the school gate, planting trees in the morning, afternoon doing health, bring their own lunch.

School program on Saturday, March 10 at a time of environmental protection activities. Locations in the Park, learn how to protect the environment, students at nine o'clock in the morning at the school gate, planting trees in the morning, afternoon doing health, bring their own lunch.