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，主要目的是绿化环境，培养学生环境保护意识,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, the main purpose is to green the environment, environmental awareness of students, requires students to nine o'clock at the school gate collection, tree planting morning, afternoon, do health, o

On 10 March, the school plan Saturday once environmental protection activities. At the park place, the main purpose of which is green environment for students for environmental awareness, students at 9 a.m. morning, tree planting, school gate at doing public health, and bring their own lunch

The school plan Saturday has an environmental protection activity in March 10.The place in the park, the main purpose afforests the environment, raises the student environmental protection consciousness, requests the student in the morning nine in the school entrance set, plants trees in the morning

School program on Saturday, March 10 at a time of environmental protection activities. Locations in the Park, the main purpose is the green environment, cultivate students ' consciousness of environmental protection, requiring students at nine o'clock in the morning at the school gate, planting tree

School programs in the March 10 Saturday once environmental protection activities. Locations in the park, the main purpose is to green the environment, environmental awareness of students, requires students to nine o'clock at the school gate collection, tree planting morning, afternoon, do health, o