It is a very thin shell of atmosphere surrounding the planet.

天空其实是一层围绕着地球，由大气组成的薄薄壳。

That thin shell would have made it easy for the planet to shed heat early in its history.

那层薄薄的外壳会使这个星球在其历史的早期就很容易散发热量。

And that thin shell does an amazing amount of work, though.

不过， 那个薄壳做了大量的工作。

Today, we will put another 162 million tonnes into the thin shell of atmosphere surrounding the planet.

今天，我们将再将 1.62 亿吨放入地球周围的薄薄的大气层中。

She nearly screamed, but then beneath the thin shell of a dragon skin, she saw Rift, smiling mischievously.

她差点尖叫出来， 但在龙皮的薄壳下，她看到了裂谷， 恶作剧地微笑着。

Every single day, we're putting 150 million tons of man-made global warming pollution into the thin shell of atmosphere surrounding our planet.

每一天，我们都会将 1. 5 亿吨人为的全球变暖污染物排放到我们星球周围的薄层大气层中。

He would now pit his little pink body against the hard vacuum of space, with nothing between them but a thin shell of metal or a pressurised suit.

现在，他要开始用自己躯体对抗外太空完全真空的环境了，身上只穿着薄薄的一层金属服，或者说压力服。

Or it could retain more calcium in its bones, keeping itself healthier, but producing an egg with a thinner shell that is more likely to crack.

或者它可以在骨骼中保留更多的钙，使自己更健康，但产下的蛋壳更薄，更容易破裂。

Then with a bit he bored a hole lengthwise through the square part, and with his knife he whittled the wood till it was only a thin shell around the round hole.

然后，他用钻头在方形部分纵向钻了一个孔，然后用刀将木头削成圆孔周围的薄壳。