1cm,边界光滑、整齐，有完整 包膜，内部回声均匀。最有可能为

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31781' and id < 2540905 and id<>'2540905' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31781' and id > 2540905 and id<>'2540905' order by id asc limit 5