Should it be like a puff of grayish white flog?

是不是应当像一阵灰蒙的白雾？

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The grayish white rocks of this volcanic island are barren.

这座火山岛灰白色的山岩，纯属不毛之地；

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It appears as grayish white lines, circles, or clouding of the cornea.

该疾病会在角膜上出现灰黑白色线条、圆圈或混浊。

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He was wearing a T-shirt that was too big for his skinny body, and his hair, grayish white, was pulled up into a bun on top of his head.

NEWYORKER: Alone

He dyed his beard from grayish white to black, leading analysts to believe that he has switched to sending only audio messages because he is altering his looks and doesn't want people to know what he looks like.

CNN: Purported bin Laden tape slams U.S. role in Pakistan

He's involved in every aspect of the business from discovering a new supplier of biodynamic Brazilian beans on a trip last fall to Espiritu Santo to the roasting to the choice of paint colors for the company's newest cafe (his current favorite is a grayish white called Benjamin Moore Dove Wing 960).

WSJ: Not the Same Old Grind: James Freeman of Blue Bottle | Creating