He staggered on the uneven surface.

他摇摇晃晃地走在高低不平的表面上。

《柯林斯英汉双解大词典》

The road has an uneven surface.

这条路的路面凹凸不平。

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The car bumped on the uneven surface of the gravel road.

汽车在高低不平的砾石路面上颠簸着。

youdao

And it was a tough transition to go from working on the material in rehearsal to the uneven surface.

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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

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