Their work reveals a lot about songbird genetics, and opens a new door to understanding the basis of human speech.

VOA: standard.2010.04.05

I think I could maybe afford a front door if I work really hard for the rest of my life.

我想如果我下半辈子努力工作的话，我可以买得起一个前门。

怡人的的汉普斯特德 - SpeakingMax英语口语达人

And you're just entering the door after work.

你刚刚下班推开家门。

Don't 课堂 - SpeakingMax英语口语达人

That's, in essence, trying to find the back door and work your way inside the software.

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Last February, my wife mentioned something to me just before I walked out the door to work.

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"It's terrible, because at 6 o'clock in the morning, when you're running out the door to work, you're having to Windex all the windows, " she says.

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