That flutter kick can not be too slow otherwise you sink


所有跟贴·加跟贴·新语丝读书论坛http://www.xys.org/cgi-bin/mainpage.pl

送交者: HunHunSheng 于 2006-5-30, 08:12:25:

回答: many people can swim 3000 m freestyle non-stop... 由 PhonyDoctorPhD 于 2006-5-29, 23:17:36:




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