The contradiction between the youth and the middle age or older is universal in any society.

年轻人与中老年人的矛盾，是任何一种社会的最常见的矛盾。

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I am sitting on the cusp of middle age.

我正处于中年。

《柯林斯英汉双解大词典》

The master, Mr. Dobbins, had reached middle age with an unsatisfied ambition.

老师，杜宾斯先生已经到了中年，但他追求的目标还没达到。

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On average,those who were larger around the middle were more likely to have migraines than those of the same age with smaller waistlines.

VOA: special.2009.03.18

This is one of the reasons why in the golden age of Arabic scholarship in the Middle Ages, there was so much dispute about the Poetics.

这就是为什么在,中世纪阿拉伯学术界的鼎盛时期，关于诗学有这么多争议。

耶鲁公开课 - 文学理论导论课程节选

I've given you the periods at the top of the chart: early Bronze Age; middle Bronze Age from about 2100 to 1550; we date the late Bronze age from about 1550 until 1200--the introduction of iron and the beginning of the Iron Age in 1200. Prior to that, the Bronze Age, which is divided into these three periods.

我在这个表格的顶端给你们列了一些时期：,早期青铜时代；中期青铜时代，从约公元前2100年到前1550年；,晚期青铜时代，从公元前1550年到前1200年，即铁器时代前页；,然后公元前1200年开始了铁器时代，在那以前，青铜时代分为那样三个时期。

耶鲁公开课 - 旧约导论课程节选

In another area not far from modern Sibari, near Spezzano Albanese, the archaeologists have unearthed dwellings from the Middle Bronze Age alongside objects of Aegean origin.

ECONOMIST: Letter from Magna Graecia: Dear George?.?.?. | The

Among those underwater, delinquency (measured as a borrower who is 90 days or more past due on a mortgage payment) is most common in the oldest and middle age brackets with 10.6% of underwater borrowers over the age of 85 delinquent on their mortgage payments and similar percentages of borrowers in both the 40 to 44 and 45 to 49 age brackets delinquent on their mortgages.

FORBES: Getting to Know Underwater Homeowners

Their audience, the new middle class of the Industrial Age, wanted pretty pictures, full of lovely landscapes, beautiful women with flowing tresses, lavish interiors.

FORBES: Eminent Victorians