For example , distillation processes that separate out any dissolved minerals by boiling and condensing water require costly amounts of fuel .

例如，蒸馏过程是通过把海水煮沸，使水汽冷凝，将一切溶解矿物质分离出来，这一过程需要大量的燃料。

This primordial material suffuses space , occasionally condensing to form dust , stars , and eventually planets .

这种原始物质弥漫于整个太空，偶尔凝结，形成尘埃、恒星，以及行星。

He found the task of condensing a few millennia 's worth of material into one magazine article challenging , but also incredibly compelling .

他觉得将货币几千年的历史浓缩为一篇文章是一件非常有挑战的事，但也是很有趣的一件事。

But according to one engineer working for the japanese regulator , experts believe that as the reactor 's fuel rods have cooled , steam inside the containment vessel is condensing into water , reducing the pressure inside .

但据一位为日本监管机构工作的工程师透露，专家认为由于反应堆的燃料棒已经冷却，密封装置内的蒸汽正凝结成水，这会降低内部的压力。

Her models show that a large percentage of the water in the molten rock would quickly form a steam atmosphere before cooling and condensing into an ocean .

模拟显示，熔化的岩石中大部分水很快会形成蒸汽，然后冷凝形成海洋。