咫尺天涯：比喻距离虽近，但很难相见，象是远在天边一样。
解释：咫：古代长度单位，周制八寸，合今市尺六寸二分二厘；咫尺：比喻距离很近。比喻距离虽近，但很难相见，象是远在天边一样。
出自：《左传·僖公九年》：“天威不违颜咫尺。”
示例：左右如今也不容相近，～一般，有甚舍不得处？ ◎明·冯梦龙《古今小说》第二十二卷
近义词：咫尺千里、远在天边、天各一方
反义词：一衣带水、天涯若比邻
语法：紧缩式；作主语、谓语、宾语；形容难以相见
相关著名诗词
《飞鸟与鱼》
———— 泰戈尔
世界上最遥远的距离 The most distant way in the world
不是生与死 is not the way from birth to the end.
而是我就站在你面前It is when I sit near you
你却不知道我爱你 that you don't understand I love you.
世界上最遥远的距离 The most distant way in the world
不是我就站在你面前 is not when i stand in front of you
你却不知道我爱你 you're not sure I love you
而是爱到痴迷 It is when my love is bewildering the soul
却不能说我爱你 but I can't speak it out
世界上最遥远的距离 The most distant way in the world
不是我不能说我爱你 is not that I can't say I love you.
而是想你痛彻心脾 It is after looking into my heart
却只能深埋心底 I can't change my love.
世界上最遥远的距离The most distant way in the world
不是我不能说我想你 is not that I'm loving you.
而是彼此相爱 It is in our love
却不能够在一起 we are keeping between the distance.
世界上最遥远的距离 The most distant way in the world
不是彼此相爱 is not we love each other .
却不能够在一起 but keep the distance across us
而是明知道真爱无敌 .It is we know our love is breaking through the way
却装作毫不在意 we deny the existance of it
世界上最遥远的距离 So the most distant way in the world
不是树与树的距离 is not in two distant trees.
而是同根生长的树枝 It is the same rooted branches
却无法在风中相依 can't enjoy the co-existance.
世界上最遥远的距离 So the most distant way in the world
不是树枝无法相依 is not in the being sepearated branches.
而是相互了望的星星 It is in the blinking stars
却没有交汇的轨迹 they can't burn the light.
世界上最遥远的距离 So the most distant way in the world
不是星星没有交汇的轨迹 is not the burning stars.
而是纵然轨迹交汇 It is after the light
却在转瞬间无处寻觅 they can't be seen from afar.
世界上最遥远的距离 So the most distant way in the world
不是瞬间便无处寻觅 is not the light that is fading away.
而是尚未相遇 It is the coincidence of us
便注定无法相聚 is not supposed for the love.
世界上最遥远的距离 So the most distant way in the world
是鱼与飞鸟的距离 is the love between the fish and bird.
一个翱翔天际 One is flying in the sky,
一个却深潜海底 the other is looking upon into the sea.