与之相反,普通的黑色物质总是会反射一点点光。
Ordinary black objects, by contrast, always reflect a bit of light.
更近一点例子是,“日光反射信号器”一直通过类似的方式传递军事信号。
More recently, so-called “heliographs” have been used to relay military signals in a similar way.
更近一点例子是,“日光反射信号器”一直通过类似的方式传递军事信号。
More recently, so-called "heliographs" have been used to relay military signals in a similar way.
更近一点例子是,“日光反射信号器”一直通过类似的方式传递军事信号。
More recently, so-called "heliographs" have been used to relay military signals in a similar way.
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