Dark green swells, slate-gray in the troughs, rolled in from a heaving horizon.
一排排暗绿色的大浪带着灰白的浪花从远处滚滚而来。
The upper member of the Lujiaping Formation is mainly dark slate, light gray-green (after weathering) sericitized slate, and silt slate.
上段以黑灰色（风化后为浅灰色）含硅炭板岩和泥灰质含炭板岩为主。
The house is clad in a medium gray brick with dark gray slate roof tiles.
住宅覆盖的是中灰色砖块，屋顶铺设的是深灰色瓷砖。
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