All substances, all forms of matter, can be distinguished according to what wavelength of light they absorb and which ones they reflect.
所有形式的物质，都可以根据它们吸收的光的波长以及反射的光的波长来区分。
The known sample is not large enough to determine a firm upper mass limit, which would in turn give more detailed insight into the physics of such extremely dense forms of matter.
这些已知的样本还不足以确定一个严格的质量上限，而这个上限可以帮助我们进一步了解这些极高密度的物质的物理特性。
All forms of matter do not have the same properties.
不是一切形式的物质都具有相同的特性的。
So physicists have speculated about exotic forms of matter and failures of the known laws of physics.
因此，已经有物理学家推测，它们可能涉及到物质的奇异形态及已知物理规律的失效。
So physicists have speculated about exotic forms of matter and failures of the known laws of physics.
因此，已经有物理学家推测，它们可能涉及到物质的奇异形态及已知物理规律的失效。
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