下面是一大段字符串，我要取出“人生”和“苦短”之间的内容，然后取出来应该是3个元素，放进一个迭代器或者列表里面，只要可以遍历的都行，我自己做失败了：
人生1hrf="//tb1.bstati.om/??/tb//pitur_593878.ss,/tb//ustom_motion_20490a.ss,/tb//uitor_motion_a5a8.ss,/tb//uitor_vio_8a30209.ss,/tb//skthpa_f60180.ss,/tb//srawl_5840a35.ss,/tb//uitor_plugin_4746834.ss,/tb//uitor_topi_bb19767.ss,/tb//topi_suggstion_3234253.ss,/tb//fullsrn_f64a424.ss,/tb/_/at_苦短
人生2hrf="//tb1.bstati.om/??/tb//top_ativity_12a4f.ss,/tb//popup_zhang_8b7436.ss,/tb//blok_usr_18a98.ss,/tb//musi_playr_0a327b2.ss,/tb//gam_o_thra_9a2228.ss,/tb//gam_thra_418.ss,/tb//singl_ions_31122.ss,/tb//post_marry_48144.ss,/tb//intration_4668aa.ss,/tb//month_ion_2401.ss,/tb/_/us苦短
人生3asi/app_ownloa_29b70.ss,/tb//lai_ifram_a48a4.ss,/tb//profssional_managr_tips_4f4.ss,/tb//by_forum_b968b.ss,/tb//thra_itm_67afa3.ss,/tb//thra_itm_titl_88b021.ss,/tb//frs_usr_bas_66b4.ss,/tb//util_pagr_f327a7.ss,/tb//thra_list_footr_99af82.ss,/tb//lbrity_wigt_95b727.ss,/tb//lbrit苦短
