因为有距离较近的行星围绕白矮星运转时，白矮星上就会有行星的阴影，这个阴影即使是一米望远镜也能观察得到。
Because a planet that close to its star would dim the dwarf's light as it passes. The dimming could be detected by even a puny one-meter telescope.
一名火车工人在距离麦克乐别墅300米的地铁上发现了麦克乐的遗体，而麦克乐的家人也证实了其身份。
A railway worker found the businessman's body on the track 300 metres from the family home, and his family confirmed the identity of the body.
只要无线光通信是在相对较短的距离上设置的——如几百米——他说，这是一种很可靠的技术。
Provided FSO is set up over relatively short distances-say several hundred metres-it is a reliable technology, he says.
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