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1·The same minerals that occur in refractory inclusions are believed to be the earliest-formed substances to have condensed out of the solar nebula.

难熔的内含物中的那种矿物质，也被认为是最早形成的太阳星云凝结的物质。

2·The Sun still contains most of the matter from the initial solar nebula.

太阳依然含有原始太阳星云的大部分物质。

3·Our solar system arose from a large, rotating cloud of interstellar debris called the solar nebula.

太阳系形成于一个巨大的旋转星云——太阳系星云，星云中含有大量的星际残骸。

4·The earth developed from a planetary embryo in the solar nebula into the third planet of our solar system.

地球在早期的太阳星云中由行星胎成长为太阳系的第三颗行星。

5·Many scientists think our solar system formed from a giant, rotating cloud of gas and dust known as the solar nebula.

许多科学家认为太阳和太阳系的其他部分是由一团称为“太阳星云”的巨大的旋转着的气体和尘埃星云形成来的。

6·The common depletion of volatile elements in terrestrial planets was probably caused by the early violent activities of the inner solar nebula.

类地行星挥发性元素普遍亏损很可能是由于太阳星云早期剧烈的太阳活动引起的。

7·Our solar system arose from a large, rotating cloud of interstellar debris called the solar nebula. The sun came first and the planets followed not long after.

太阳系源自一个巨大的旋转星云的星际碎片，我们称其为太阳星云。太阳是第一个形成的，其他星体紧随其后形成。

8·Resembling a huge paw print, the Cat's paw Nebula is a star-formation region, with stars of close to 10 solar masses produced there in the past several million years.

猫掌星云看起来就像一个巨大的爪印，它是恒星形成区域，近几百万年间在猫掌星云里诞生的恒星具有近10个太阳的质量。

9·So, by not collapsing into denser regions, these massive nebulae, like the 100,000 solar mass California Nebula shown above, don't necessarily start making baby stars and planets.

所以如果不被压缩到很致密，这些大质量星云，比如有太阳质量100，000倍的California星云，则不一定会形成新生恒星和行星。

10·'They recorded the history of the solar system before any of the planets formed, and were the first solids to condense out of the gaseous nebula surrounding our protosun.'

他们记录了行星形成前，太阳系的历史，并且是第一个围绕我们原太阳的固体凝结的气体星云。