音乐符号“p”和“mf”分别指的是（

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31274' and id < 2510097 and id<>'2510097' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31274' and id > 2510097 and id<>'2510097' order by id asc limit 5