向一小杯自来水滴加红墨水，红墨水会扩散到整杯水中，该现象说明（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27807' and id < 2285916 and id<>'2285916' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27807' and id > 2285916 and id<>'2285916' order by id asc limit 5