Answers about United States of America
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在丹佛（Denver, CO），霜线大约在 30 到 **36** 英寸（76 到 91 厘米）深度。这个深度指的是地下冻结的深度，通常在冬季可以影响到地基和管道的埋设。
是的，就是这么深。。
Here is more information about Mines stop by our internet site.
是的，就是这么深。。
Here is more information about Mines stop by our internet site.
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