A wavy irregularity in the surface of a coating film created by the flow characteristics. Orange peel appears as an uneven or rough surface to the eye, but usually feels smooth to the touch.

因为流动的特性在涂层的表面产生的不规则的波纹，肉眼看上去桔纹是一种不平坦的和粗糙的表面，但触摸上去是光滑的。

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I could go on and on, but suffice to say: existing baskets, with a much smaller exit surface area vs a larger entry area on top for liquid often result in uneven, sometimes unpredictable extractions.

这足以说明，相对较大的滤碗上表面，滤碗较小的下表面常常导致萃取不均匀、或无法预料的萃取结果。

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But the surface of overglaze ceramics is uneven. Overglaze ceramics have exceeded risks of heavy metals.

而釉上彩陶瓷制品表面有凹凸不平，有重金属超标的隐患。

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The road petered out in an area with little valleys, ridges, hills, and peaks, but it was not the contours of the land that created the uneven surface but, rather, the layers of things that had been thrown away: everything that the consumerist city had used up and expelled so that it could immediately enjoy the pleasure of handling new things had ended up in this unprepossessing neighborhood.

NEWYORKER: The Daughters of the Moon

Your goal is a relatively flat surface, but don't worry if it's a little uneven it will be concealed inside, with the stuffing.

WSJ: Too Many Cooks in the Kitchen? Not With the Right Plan

Sutton had a great chance to put Motherwell two up but he sliced the ball 12 yards out after Clarkson's square ball bobbled on the uneven surface.

BBC: Motherwell 1-1 Aberdeen