上个星期六学生们去木兰山进行了一次野餐, 请参考所给词语, 描述 此次活动.(15) go to Mu Lan Moun

Last sartuday we went to the mu lan shan motutain to have a picnic.We took several sandwiches and some bottles of water with us for lunch. Of course we didn't forget to take some fruit and we even took some tomatoes and cucumbers. We left home quite early in order to avoid the traffic jam.About two hours later, we came to a nice place. It was near a river. We put our bicycles under the trees and went swimming. It was a very hot day. The water was very refreshing. After having a swim, we had lunch in the cool shade under the trees. Then we went for a walk. We didn't come back home until the night fell.