7 sentences

1. 他已经步入中年了。

   tā yǐ​jīng bù​rù zhōng​nián le.

   He has already entered middle age.

   Source: Dong Chinese Dictionary

2. 我是个自欺欺人的中年妇女。

   wǒ shì gè zì​qī​qī​rén de zhōng​nián fù​nǚ.

   I'm just a middle-aged woman who's fooling herself.

   Source: OpenSubtitles

3. 他到了中年就长了个大肚子。

   tā dào le zhōng​nián jiù zhǎng le gè dà​dù​zi.

   He developed a potbelly in middle age.

   Source: Dong Chinese Dictionary

4. 他人还没到中年，就已经地中海了。

   tā rén hái méi dào zhōng​nián, jiù yǐ​jīng dì​zhōng​hǎi le.

   He hasn't even reached middle age, but he's already balding on top.

   Source: Dong Chinese Dictionary

5. 他因为中年丧子，性格变得非常消沉。

   tā yīn​wèi zhōng​nián sàng zǐ, xìng​gé biàn de fēi​cháng xiāo​chén.

   Because he lost his son in middle age, he became very despondent.

   Source: Dong Chinese Dictionary

6. 他的中年危机可以解决我们的问题。

   tā de zhōng​nián wēi​jī kě​yǐ jiě​jué wǒ​men de wèn​tí.

   His mid-life crisis can solve our problem.

   Source: OpenSubtitles

7. 他早年仕途屯邅，中年以后才逐渐顺遂。

   tā zǎo​nián shì​tú zhūn zhān, zhōng​nián yǐ​hòu cái zhú​jiàn shùn​suì.

   His early political career was fraught with difficulties, and it only gradually became smooth after middle age.

   Source: Dong Chinese Dictionary