从上面渗入的夏季潮湿空气到了地下则变得湿腻腻的。这里的常年气温保持在华氏60度左右。

Humid summer air, drawn in from above, was chilly and clingy underground, where temperatures hover around 60 degrees Fahrenheit year-round.

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由于密实度高，可防止雨水渗入，有效防止水损害，保证沥青路面的使用性能。

Because of higher compactness, water permeation can be prevented and the damage by water was reduced. The performance of asphalt pavement was also guaranteed.

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