高墙

bīng yíng sì zhōu bèi gāo qiáng wéi rào

兵营四周被高墙围绕。

The barracks were surrounded by a high wall.

gāo qiáng yǐ nèi de shēng huó

高墙以内的生活

life in prison

tā yǐ jīng nián méi chū jiān yù gāo qiáng le

他已经20年没出监狱高墙了。

He had not been outside the limits of the prison walls for 20 years.