天渊之别 [tiān yuān zhī bié]
1 比喻高、下相差甚远,区别甚大。
英 as far as heaven from the abyss of the ocean; as far apart as the land and sky;
1 形容差别悬殊。
1 天与地相距极远。比喻相差极大。
天渊之别
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