我知道，幸福不一定包括2.5个孩子（据一项美国调查显示，一个美国家庭中孩子的理想数量是2.5个——译注）、位于郊区的房子和白色的栅栏。

I know that happiness does not have to include 2.5 children, a house in the suburbs and a white picket fence.

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帕洛玛天文台的一项超新星调查显示，已经有四个星体与预期的类型不一致。

A survey of supernovae run at the Palomar Observatory has now identified four objects that don't fit the expected pattern.

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