精确的是这种声纳观察世界的方法，蝙蝠可以通过大小、形状和纹理来辨别像蚊子这样的小东西。
Precise is this sonar view of the world that bats can distinguish by size, shape, and texture something as small as a mosquito.
这样，您就可以通过在虚拟世界中在真实系统周围走动并从某个角度进行查看，从而观察真实系统的实际结构和行为。
This way, you can observe the actual structure and behavior of a real system, by walking around it and viewing it from any Angle in a virtual world.
很多这样的工作是可以通过观察附近的宇宙空间来完成的。
Much of this work can be done by observing the nearby universe.
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