The heated gas is piped through a coil surrounded by water.

受热气体通过水中的一根螺旋管输送。

《柯林斯英汉双解大词典》

Islands are surrounded by water.

岛的四周都是水。

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As the unit is surrounded by water, corrosion and maintenance are important issues to consider.

由于公寓单位四面环水，腐蚀及维修便成为需要考虑的重要问题。

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In the center of the courtyard, there is a huge glass and steel pyramid surrounded by water fountains and smaller pyramids.

VOA: special.2010.06.23

I mean, they're surrounded by water everywhere you look.

我是意思是,那儿四面环水

耶鲁公开课 - 古希腊历史简介课程节选

The opposite leaflet does the other thing, the water soluble part points down and the fat points up, so now you have thin region of fat which is surrounded on both sides by water.

相反的部位则有不同的情况,水溶性部分向下,而脂肪向上,所以现在就得到了,两侧均被水包围的薄层脂肪区域

耶鲁公开课 - 生物医学工程探索课程节选

The bitumen coats the grains of sand like a film and is in turn surrounded by water.

FORBES: The Promise And Pitfalls Of Canada's Oil Sands

Judge JOHNSON: I saw buildings surrounded by water, and that's the last glimpse I had of my building for months.

NPR: New Orleans Courts Come Back to Life

Ringed by mountains and surrounded by water, Yuhuan County is literally an island and is cut off from the rest of China.

FORBES: China's Tier 2 and Tier 3 Cities: Part II