The negative pole of a battery is the part which releases electrons.

电池的负极是释放电子的一端。

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The action of the negative pole of a magnetic needle is just as real as the action of the positive pole.

一根磁针的磁极作用，无论正负都是一样的真实。

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The action of the negative pole of a magnetic needle is just as real as the action of the positive pole .

这个效应表明，有一种垂直于圈平面的力作用在磁极上。

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When the Arctic Oscillation turns negative, that is, when the winds weaken, the cold air normally trapped around the North Pole surges south.

FORBES: 2011 Forecast: World Outperforms U.S., Europe Scuttles

This pole-centred roundel of warm-in-cold is symptomatic of what climatologists call the negative phase of the Arctic oscillation (AO).

ECONOMIST: Britain��s cold snap is explained by the Arctic oscillation