As the Earth has cooled and crystallised, there were gases from volcanoes coming to the surface and the steam from them has probably formed the majority of the oceans.
当地球冷却和结晶的时候，来自火山的气体到达地球表面，其中的蒸汽可能已经形成了海洋的大部分。
Once the cylinder had been filled with steam it was cooled directly by the application of cold water.
蒸汽充溢汽缸后，它会因为冷水的温度而直接冷却。
The steam passes along the plastic tube to the test tube, where it condenses on contact ith the ice-cooled glass.
蒸汽经过塑料导管传到试管过程中，接触到冰冷的玻璃后开始液化。
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