求翻译：上周日是植树节，天气晴朗，六年级一班的学生去植树，他们有的挖坑，有的把小树苗放进坑里，有的去取水，有的浇树，他们种了许多树，他们很高兴。是什么意思？

Last Sunday is Arbor Day, the weather, a group of sixth grade students to plant trees, some of them digging, and some small trees into the pit, and some to fetch water, and some watering trees they have planted many tree they were pleased.

Arbor Day is on Sunday, the weather was fine, and at grade 6 students to a class of tree planting, and some of them have dug a pit, there is a small tree seedlings in the pit, and there are going to get the water, the trees, and they have a many trees, and they are happy.

Last Sunday is the Arbor Day, the weather is sunny, a sixth grade class of student plants trees, some of them dig the pit, some admit the small seedling in the pit, some takes the water, some pouring tree, they has planted many trees, they are very happy.

Is Arbor Day on Sunday, the weather was fine, six class one of the students go to plant trees, some of them digging holes, and some small trees in the pit, and some go and fetch water, watering the trees, they planted a lot of trees, they're very happy.

正在翻译，请等待...