恍如隔世 [huǎng rú gé shì]
[as if being cut off from the outside world for ages;become like an old remembrance;feel like sth.was another world]
【解 釋】恍：恍然，恍惚，宛如。如：如同。世：三十年為一世。恍惚如同相隔一輩子。比喻事物變化展很快，變化很大
【出 處】宋·成大《吳船錄下》：“常州，平江親戚故舊來相迓者，陸續於道，恍然如隔世焉。”
【用 法】動賓式；作謂語、定語。
【同 義】人世滄桑、滄海桑田、日新月異、隔世之感
【示 例】月下重遇，恍如隔世，故人相對久無語。
n.: as if being cut off from the outside world for ages, become like an old remembrance, feel like sth.was another world, so different that it is as if a generation had passed