green slate

基本解释

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。
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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 sun swung steadily up the sky, and they knew it was broad day because the color of the sea changed from slate to emerald-green, streaked with amber lights, and the foam was like tumbling snow.
太阳冉冉地升上天空，他们知道是大白天了，因为海的颜色由暗蓝变成了碧绿，上面还夹带着琥珀色的光道，而那浪花好似滚滚白雪。夜去昼来的过程，他们并不知晓。他们只是从滚滚而来的浪涛的颜色上察觉到这番变化。

The men knew it was the middle of the day because the color of the sea changed from slate gray to emerald green, with gold lights.

The iPod nano, he notes, is now offered in pink, yellow, blue, green, purple, silver and slate.
FORBES: Apple Plans iPhones In More Sizes, More Colors, Analyst Says