罪犯被送进监狱服刑。

Zuìfàn bèi sòng jìn jiānyù fúxíng.

The criminal was sent to prison to serve his sentence.

在监狱里，他学到了一些新的技能。

Zài jiānyù lǐ, tā xué dàole yīxiē xīn de jìnéng.

In prison, he learned some new skills.

这座监狱已经存在了很多年。

Zhè zuò jiānyù yǐjīng cúnzài le hěn duō nián.

This prison has been in existence for many years.