He went off to school with a satchel over his shoulder.他背著书包上学去了。He carefully balanced the satchel so that its contents would not spill out onto the floor.他仔细地把小背包放好,不让里面的东西掉到地板上。Javier takes a sketchbook and a box of coloured pencils from his satchel.哈维尔从书包里拿出一本素描簿和一盒彩色铅笔。