In recent years, many mid-sized cities have begun to adopt a middle-of-the-road approach incorporating the excitement and opportunity of large cities with small cities' quiet after midnight.

近年来，许多中型城市开始采取中间路线，将大城市的兴奋和机遇与小城市午夜后的宁静结合起来。

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This is called mittelschmerz from the German words for "middle" and "pain" because it occurs mid-cycle.

“经期间痛”这个词来自于德语中的“中间”和“疼痛”两个词，由于它发生在两次月经之间。

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The house, built in the mid-1950s, was essentially a one-room structure, long and thin, divided down the middle, with the bathroom dropped like a block in the center.

房子建于20世纪50年代，大体上是一个单间结构，形状狭长，中间的浴室将整个房间分隔成2部分。

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Administration officials say that the decision is not likely to be made until Mr. Powell returns from the Middle East in mid-May.

CNN: Bush's goal: Balancing a host of opposing forces

So, we have a dichotomy between middle age and the mid-life crisis.

BBC: Viewpoint: Just what is middle age?

This trend will only accelerate as the middle class expands in mid-sized and smaller cities, because only one-fifth of lower-income Chinese currently own diamond jewelry.

FORBES: Diamonds Sparkle For The Next Billion Consumers