有氧训练中，靶强度的运动时间一般为（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25668' and id < 2157306 and id<>'2157306' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25668' and id > 2157306 and id<>'2157306' order by id asc limit 5