The fragments themselves almost certainly contained no sulfur, but astronomers believe that the cloud layer below Jupiter's outer atmosphere does contain sulfur.

这些碎片本身几乎不含硫，但天文学家相信，木星外层大气之下的云层中确实含有硫。

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Darkness was coming early because of the cloud layer that still blanketed the sky.

由于空中仍然垂着沉甸甸的乌云，天黑得较早。

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Some of the heat radiates into space, but much of it bounces off the cloud layer and goes back into the ground.

一些热量就会散发到空气中，但大部分的热量会弹出云层，回到地面。

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Amazon he says has done a very good job with the cloud layer.

FORBES: Connect

The uppermost parts of its thick cloud layer mysteriously absorb half of the ultraviolet light received by the planet.

ECONOMIST: Planetary science

The real carrot is the managed services and software on top of a Cloud platform and application layer.

FORBES: Rackspace: Bull and Bear Cases