vary from...to,range from...to的区别vary from...to, range from...to的区别是什么呢?

x��)�+K,�TH+�����+��)J�KOE��jyڳ�i�j4e �T>�����';;�N\do�T�O���m�~�� ]<��EC+P����g s��mx���t� ���3��L{��K�����UO;6I��';z�N��y�~��eMɥ9%�E� pW($*��+$=ݰ�31 d��v�Y��t>ݾ��&����C�~ٴ�e�d R�7�i�t���g>[���Y���m���j{�� 4�y�Χm�
��~qAb�(���
+