如果前门没有人听见你敲门，为什么不试试敲后门呢？
Why not try knocking at the back door if nobody hears you at the front door?
小狗成为我们家一员约两年后，一天，有个流浪汉敲我们家后门，问我们能否给他点吃的。
The little dog had been a part of our family for about two years when a hobo knocked at the back door and asked if we could give him something to eat.
有一次，我听见敲桌子的声音，之后门“吱呀”开了一小条缝隙，然后我有听见了一些敲击声。
Once, I heard knocks on my table, then the door creek and open a little, then following by several knock around me.
有一次，我听见敲桌子的声音，之后门“吱呀”开了一小条缝隙，然后我有听见了一些敲击声。
Once, I heard knocks on my table, then the door creek and open a little, then following by several knock around me.
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