There were not as many vulnerable electrical items then, but it did knock out telegraph services, even burning down some telegraph stations, he said.
当时还没发明这么多这么脆弱的电器设备，但风暴切断了通讯，甚至烧坏了一些信号站的设施。
And then finally there comes a knock on the door and you open it up and you realize that something different is finally going to happen.
最终敲门声响了，你打开门，意识到变数终于发生了。
Then there came a knock on the town-gate, and the old king went and open it.
这时，城堡的大门传来敲门的声音，于是老国王走过去打开它。
No one really learns anything until they see it, hear it, smell it, knock it over and then eat it.
没有人可以真正了解一个东西直到他们能够看到这个东西的样子、听听它的声音、闻一闻它的气味、敲敲它、然后把它吃掉！
It see the girl closed the door, then hand "pound" knock on the door.
它见姑娘家门关著，便用手“咚咚”敲门。
It is one of those boys who like to knock at the door of the people and then run away.
是一个那种喜欢去敲人家门然后跑掉的男孩子。
But social media has created an enormous "virtual middle class," as Thomas Friedman has called it, who will continue to knock on, and then break down, the door of opportunity.
但社交媒体创造了一个巨大的、被托马斯·弗里德曼称为“虚拟的中间阶层”的群体，这个阶层会继续叩响然后打破机遇之门。
That is because it is relatively easy in flies to knock out the function of a single gene and then attempt cloning with these cells, which will test whether that gene is important.
这是因为在苍蝇中相对比较容易敲除一个基因的功能，然后尝试克隆这些基因敲除了的细胞，并检测这个被敲除的基因是否重要。
That is because it is relatively easy in flies to knock out the function of a single gene and then attempt cloning with these cells, which will test whether that gene is important.
这是因为在苍蝇中相对比较容易敲除一个基因的功能，然后尝试克隆这些基因敲除了的细胞，并检测这个被敲除的基因是否重要。
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