The tables are fitted with a glass top to provide an even surface.

那些桌子都装有玻璃台面以提供平滑的表面。

《柯林斯英汉双解大词典》

A pitfall trap can be any small container placed in the ground with the top level with the surrounding surface and filled with a preservative.

陷阱可以是任何放置在地面上的小容器，其顶部与周围的表面齐平，并装满防腐剂。

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If the glass were kept hot enough, it would flow over the molten tin until the top surface was also flat, horizontal and perfectly parallel to the bottom surface.

如果玻璃保持足够的温度，它就会在熔化的锡中流动，直到顶部表面也变得平整、水平，与底部表面完全平行。

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The very top of the wire drawing represents the only part of the ocean landscape that can be seen on the surface of the water: It is Bouvet Island, one of the most isolated islands in the world.

VOA: special.2009.05.06

Clay has never been a favored surface for top American players in the professional era, but during the country's recent downturn, they've seemed positively allergic to the crushed brick.

WSJ: Americans Produce Feats on Clay

Satellites have long been used to track ice extent (area), but calculating the thickness of the marine floes requires the overflying spacecraft to gauge the difference between the top of the ice surface and the top of the water - a relatively simple calculation then gives the overall volume.

BBC: Launch success for Esa's Cryosat-2 ice mission

The community votes on ideas, and those that surface to the top get a very close look by Dell.

FORBES: In Dell Social-Media Journey, Lessons For Marketers About The Power Of Listening