你所需要的只是一双锐利的眼睛和正确的态度。
这需要一双锐利的眼睛来发现商店里的事物并不是它们应该是的样子。
It takes a sharp eye to notice things aren't exactly as it should be.
哈勃有一双锐利的眼睛，当星系看上去相互重叠的时候，它能够让天文学家视觉分辨出物体在前还是在后。
Hubble's sharp view allows astronomers to try and visually sort out what are foreground and background objects when galaxies, superficially, appear to overlap.
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