—纳米是一米的（ ），略等于45个原子排列起来的长度。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29890' and id < 2424845 and id<>'2424845' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29890' and id > 2424845 and id<>'2424845' order by id asc limit 5