历代长城的布设都是以自然地理环境为基础，其走向与我国半湿润与干旱气候分界线基本一致。
The arrangements of the wall in past dynasties are based on physiographic conditions, and are Just Consistent with the demarcation line between semi-humid and arid climates in the country.
我国古代的伟大建筑，恐怕莫过于万里长城了。
Of all the ancient Chinese buildings, the Great Wall is perhaps the greatest.
长城是我国古代劳动人民创造的奇迹。
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