last but not the least是什么意思,应该如何用,可以举个例子吗?

Last but not the least最后或最后但并非最不重要Last but not the least,no littering is allowed。最后一条也很重要,严禁乱扔废物。Last but not the least is the arrangement of the flowers; that is really an important matter。最后不可忽视的是花的布置;这的确是件重要的事。-- The last but not the least。最后一点也很重要。