The worship of the Big I)ipper served as a ritual of joining yin and yang during which the fox would gain vital energy to assume human form.

拜斗礼拜用为一种结合阴阳的仪式，这期间狐狸获得生命力，具有了人形。

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Markets in stocks and commodities form a vital part of the American economic system.

股票和期货市场构成了美国经济系统中的一个重要环节。

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A detailed patient history and physical exam form the foundation of patient evaluation and vital patient data that enables efficient, quality patient rounds.

一份详细的病史和体检是评估患者的基础，也可为组织高质量、高效率的查房提供重要的资料。

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Many saw its collapse as not just the demise of a national institution (it claims to be Asia's first airline), but also the loss of a vital form of transport.

ECONOMIST: The Philippines

"At a time when the arts face continuing cuts to public funding, this kind of private philanthropy is a vital form of income without which this series would not be possible, " he said.

BBC: Welsh National Opera welcomes ?1.2m Getty family gift

The United States is surely right to seek to minimise its own casualties, but if war can be waged by one side without any risk to the life and limb of its combatants, has a vital form of restraint been removed?

ECONOMIST: The ethics of warfare