We figured it was built a long time ago, so it won't be as slick as robot city downtown.
我们认为这是很早已前就建好的，所以并不象机器人城的市中心那样整洁。
It was built with stones and bricks a long time ago to protect the northern border of the country.
它是在很久以前用石头、砖砌成的，用来保护北方边境。
It was built with stones and bricks a long time ago to protect the northern border of the country.
它是在很久以前用石头、砖砌成的，用来保护北方边境。
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