回複：西子，說說看！

來源: 於 2012-02-27 14:51:02 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

You can hear it even with windows closed. Low frequency noise pass a long way if there is no trees or buildings in between.

Especially at night.

Stay away from high way.