As elevation increases, narrow, deep channels of water form throughout the marsh.

随着海拔的升高，沼泽中形成了又窄又深的水渠。

youdao

Ridges of peat and pools of dark, acidic water form a patterned peatland near Moon Point.

月亮峰附近，隆起的泥炭和黑色水潭、酸性水形成有图案的泥炭地。

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Water vapour condenses to form clouds.

水蒸汽冷凝形成云。

《柯林斯英汉双解大词典》

Medical workers in Haiti are now trying to spread the message not to use river water without some form of purification.

VOA: special.2010.11.10

So iron left to own devices in the atmosphere in the presence of a little bit of water, with the water form iron oxide.

铁在大气中，在存在,少量水的条件下，大气会开始与水结合产生氧化铁。

麻省理工公开课 - 热力学与动力学课程节选

If we take hydrogen peroxide in the liquid state, it can break down to form water and oxygen.

如果我们有一些液态的过氧化氢，它会分解成水和氧气。

麻省理工公开课 - 热力学与动力学课程节选

These are the tiny airborne particles around which water droplets form, thus catalysing the condensation of clouds.

ECONOMIST: Aerobiology

Cement is then mixed with water to form this ubiquitous material which shapes our landscapes and cities.

BBC: By Ian Hardy

Most of the methane reacts with the oxygen in the water to form carbon dioxide, another greenhouse gas.

BBC: Methane seeps from Arctic sea-bed