http://www.ci.portage.wi.us/vertical/sites/%7B889D2199-3A6C-48F9-AB94-DE81D288EE40%7D/uploads/red_cross_swim_levels_2012.pdf
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• 差不太多。 蛙泳是level 4 (8) and level 5 (5) -trivial- ♀ (315 bytes) () 08/24/2012 postreply 13:28:50
http://www.ci.portage.wi.us/vertical/sites/%7B889D2199-3A6C-48F9-AB94-DE81D288EE40%7D/uploads/red_cross_swim_levels_2012.pdf
• 差不太多。 蛙泳是level 4 (8) and level 5 (5) -trivial- ♀ (315 bytes) () 08/24/2012 postreply 13:28:50