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 first soft metal layer and the second soft metal layer are correspondingly plated on the contacts of the positive pole and the negative pole of the dry battery.

第一软金属层和第二软金属层 是对应镀在干电池的正电极的触点上及负电极的触点上。

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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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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