This love is not merely a blessed feeling. It is an active principle.

这个爱并不仅仅是一个甜美的感觉，而是一个叫人积极的原则。

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Objective To study the anti HBV effect of the active principle of Styelec plicata in vitro.

目的研究皱瘤海鞘有效部位的体外抗乙型肝炎病毒(HBV)的作用。

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Yesterday, she explained the dichotomy between the active principle of yang and the passive principle of yin.

昨天她解释了‘阳'的主动原则与‘阴'的被动原则之间的本质对立。

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Most of the few existing assisted-suicide laws rely on the principle of active and informed consent to a procedure that may, or will, lead to death.

ECONOMIST: The right to choose to die

David McNair, senior economic justice adviser at the charity Christian Aid, says tax havens are used in a variety of ways, but the general principle - for a business active in a number of countries - is to maximise the amount of profit made by subsidiaries based where taxes are low, at the expense of those based where taxes are high.

BBC: Tax havens: Is the tide turning?

Engineered geothermal systems (EGS) are based on a related principle, but they work even in parts of the world that are not volcanically active, by drilling thousands of metres underground to mimic the design of natural steam or hot-water reservoirs.

ECONOMIST: Inside story: Hot rocks and high hopes | The