a good pair of shoes is a must. walk before you run.

来源: acac 2012-10-19 17:26:26 [] [旧帖] [给我悄悄话] 本文已被阅读: 0 次 (0 bytes)
回答: 据说跑步时脚后跟不着地即可~仨饱一倒2012-10-19 11:33:57

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heels usually touch ground first. -acac- 给 acac 发送悄悄话 (0 bytes) () 10/19/2012 postreply 17:29:11

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