只需敲敲门，很多人都会很高兴地带你参观他们的房子。
Knock and many will gladly show you the inside of their houses.
偶尔，可以走到稀落的房子中间，可以敲敲门，他们肯定会热情接待你，为你倒一杯水，然后问下自己的近况。
Occasionally, you can go to the middle empty house, can knock on the door, they will receive you warmly, pour a glass of water for you, and then ask your situation.
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