有些是灰色的，有些是白色的，还有一些是棕色和黑色的混合色。
Some were gray, others white, and still others a mixture of brown and black.
来自休斯顿的消息：在实验室里，月亮石看起来平淡无奇——深灰色玄武岩，白色斜长岩以及二者的晶体混合物。
HOUSTON - in the lab, the Moon rocks look nondescript - dark gray basalt, a whitish mineral called anorthosite and mixtures of the two with crystals thrown in.
混凝土混合物致密、高流动性，使用灰色水泥和熔渣来获得浅灰色装饰，并且满足LEED标准。
The concrete mix was a dense, high fluid self-consolidating mix, using grey cement and slag to achieve a light grey finish and meet LEED standards.
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