乌wū龟guī说shuō：“青qīng蛙wā老lǎo弟dì，你nǐ知zhī道dào我wǒ要yào去qù哪nǎr儿吗ma？我wǒ要yào去qù大dà海hǎi！”
青qīng蛙wā问wèn：“大dà海hǎi是shì什shén么me？难nán道dào比bǐ我wǒ的de井jǐng好hǎo？”
乌wū龟guī说shuō：“大dà海hǎi呀ya，就jiù是shì根gēn本běn无wú法fǎ估gū量liang到dào底dǐ拥yōng有yǒu多duō少shao水shuǐ的de地dì方fang。大dà海hǎi大dà得de看kàn不bu到dào边biān，大dà海hǎi深shēn得de何hé止zhǐ千qiān百bǎi丈zhàng。天tiān上shàng下xià的de雨yǔ水shuǐ、地dì上shang流liú的de江jiāng河hé都dū会huì涌yǒng向xiàng大dà海hǎi，可kě你nǐ看kàn不bu见jiàn海hǎi水shuǐ涨zhǎng多duō少shao；若ruò是shì一yì连lián几jǐ年nián不bú下xià雨yǔ，你nǐ也yě看kàn不bu出chū海hǎi水shuǐ少shǎo多duō少shao。这zhè样yàng的de地dì方fang，一yì口kǒu水shuǐ井jǐng能néng比bǐ得de了liǎo吗ma？”