Studying the chemistry of the stars helps scientists learn how the matter that makes up our earth and other planets in our galaxy left its stellar birth places long ago.

研究这些恒星的化学组成有助于科学家了解组成我们地球和其他行星的物质，很久以前是怎样离开恒星的诞生地(到达我们太阳原始星云)的。

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But it would play a big role in the way comets' made their way 'from their birth places in the planetary disc out to the Oort Cloud and on now they can return to the inner solar system.

但是，在彗星从它们在行星盘的诞生地'前进'到奥尔特云的方式上，以及它们能返回太阳系内部的途径上，这颗星扮演着重要的角色。

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Because they depend on familiar groupings—such as passport numbers, places of birth and birth dates—they tend to be highly structured sequences that are quite easy to guess.

因为它们有赖于常见分组——如护照编号，出生地和出生日期——这往往是些高度结构化的序列，极易获取。

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When the researchers analysed women who had already given birth or who had no complicating conditions, the cost differences between planned places of birth narrowed.

BBC: Home births more 'cost effective', says Oxford study

We obtained figures from both universities for the months of birth of undergraduate applicants for places in 2012.

BBC: Month of birth affects chance of attending Oxbridge

"While in some areas we are seeing a maturing population and a fall in the demand for school places, in others, with more people moving in and an increase in birth rates, there will be a need for more places, " said Councillor Les Wicks.

BBC: Medway draws up plans for new school places