Lightning needs clouds to occur, and clouds are absent on Mars due to its rarefied atmosphere.

闪电需要云来产生，而火星上由于大气稀薄，云是不存在的。

On Mr Keyser's plausible view, using ordinary language is a less rarefied talent than making music.

在凯瑟生看来，使用普通语言并不像制作音乐那么稀罕。

He then moved to France to make red Burgundy, the most rarefied and tricky wine of them all.

他移居到法，最纯正最优良的勃艮第红酒制作。

But before things get too rarefied, Mr Ball's facility for conveying complex facts in simple language comes to the rescue.

但是在事情变得简化，Ball生以简单语言表达复杂实事的作用可以来救救场。

And as we push the timer back even farther we find temperatures and densities that make a supernova look chilly and positively rarefied.

当我们再往后推一段时间时，我们发现那时的温度和密度让超新星看起来很冷、很稀薄。

Looking back, I think that Mrs. Strickland was the most harmless of all the lion-hunters that pursue their quarry from the rarefied heights of Hampstead to the nethermost studios of Cheyne Walk.

现在回想起来，在那些惯爱结交文人名士的人中，思特里克兰德太太要算心地最单纯的了，这些人为了把猎物捕捉到手，从汉普斯台德的远离尘嚣的象牙塔一直搜寻到柴纳街的寒酸破旧的画室。