adv.顺序地；继续地
Because the algorithms process elements sequentially, they require input iterators. 因为算法顺序地处理元素，所以它们要求输入迭代器。
Each of the partition numbers is sequentially repeated in a round-robin fashion to fill the partitioning map. 每个分区号按循环的方式顺序地填充分区映射。
