他们指给我那些原本隐藏起来、却被寂静暴露了的东西：一头野鸡从灌木丛中伸长脖子打探我们，一只乌鸦在树枝间跳来跳去，一只浣熊在它的窝里打鼾。
The hidden things silence revealed: a pheasant craning its neck to spy on us from a thicket, a crow hopping from branch to branch, a raccoon snoring in den.
把软件隐藏起来，然后只提交接口，将会限制我们查看我们运行的应用程序的源代码的能力。
By hiding away the software and presenting only the interface, they will limit our ability to see the source code for the applications we run.
研究人员给四只乌鸦观看人的一组彩色照片，但把头发隐藏起来，训练一对乌鸦挑选男人照片，另一对乌鸦去选女人照片。
After scientists showed the four crows a series of colour photographs of humans with their hair concealed, one pair was trained to pick men's faces and the other pair women's faces.
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