You need an even surface to work on.

你需要有个平面在上面工作。

《牛津词典》

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》

Some scientists speculate that Mars may have enjoyed an extended early period during which rivers, lakes, and perhaps even oceans adorned its surface.

一些科学家推测，火星在早期很长时间里可能都有以河流、湖泊，甚至海洋装点着它的表面。

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Even civil rights leader Reverend Jesse Jackson admits that on the surface, Gary,Indiana seems an unlikely location for a tribute to one of the world's most popular musicians.

VOA: standard.2009.07.11

However, methane from undersea hydrates has an even bigger 13C deficit than that from surface bacteria.

ECONOMIST: Methane and climate change

There is no threat from El Nino, an abnormal warming of surface ocean waters which disrupted even distribution of last year's monsoon rainfall, the official told The Wall Street Journal.

WSJ: India Set For Normal Monsoon

The deck of some boats, such as the Taunton, a 228-foot Danish steamer built in 1902, lie just 10 feet below the surface, an easy duck dive for even an average swimmer.

BBC: Wreck diving in Bermuda