Couching distance originally refers to the distance one can reach without leaving the couch or sofa. But now it can also refer to distance that literally¹ requires you to leave the couch but is near enough anyway. 

 

“沙发距离”最初指无需离开沙发就能够到的距离。不过现在也可以指更远一些的需要离开沙发才能到达、但是也相当近的距离。

 

Example: 

 

That job is too far; it's not within couching distance.

那份工作的办公地点离家太远了，不在“沙发距离”之内。

 

I can't reach the remote control because it's not in couching distance.

我够不到遥控，因为它不在“沙发距离”之内。

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