先练一百米折返，或二百米间歇。以后再试五个四百。日累积达二千。一次跑二千，不长不短，不快不慢，不累不怠，适合初学老太

来源: fuz 于 2023-07-19 13:51:17 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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