答案解析

查看更多优质解析解答一举报沧海cānghǎi[deep blue sea;the sea] 大海.

以其一望无际、水深呈青苍色,

故名东临碣石,

以观沧海.

——《乐府诗集·曹操·步出夏门行》沧海桑田cānghǎi-sāngtián[the swift changes of the world;great changes are seen in the course of time;the evanescence of the worldly affairs is like the sea turned into a mulberry field (orchid)] 大海变成了种桑树的田地,

种桑树的田地变成了大海.

比喻世事多变,

人生无常;或喻世事变化的巨大迅速——略称沧桑山河改转,

沧海桑田沧海一粟cānghǎi-yīsù[a drop in the ocean] 沧海浩大,

一粟渺小.

比喻人生在世犹一粟于沧海之中

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