When the warmed alloy is placed near a permanent magnet, like a rare-earth magnet, the alloy's magnetic force increases suddenly and dramatically.

当加热的合金放置在永久磁铁——如稀土磁铁附近时，合金的磁力会突然戏剧性地大幅增加。

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Scientists now know, however, that the surface of the Earth is not as permanent as had been thought.

但是现在科学家们搞明白了，地球的表面不是像我们以为得那样一成不变。

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Use of Rare earth NdFeB permanent magnet, high efficiency and light weight, low energy consumption, high output power.

磁铁使用稀土钕铁硼永久磁铁，效率高且自重轻，耗能少，输出功率大。

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(Speaking) Spacewalkers bolted the cupola to its permanent Earth-facing position earlier this week.

VOA: standard.2010.02.18

Scientists now know,however, that the surface of the Earth is not as permanent as had been thought.

VOA: special.2010.01.12

The EarthView survey, conducted by Frederick Schneiders Research on behalf of the National 4-H Council and Honda, found that teen-agers and baby boomers agree that government and industry are falling short of their environmental obligations and that time is running out to protect the Earth from permanent environmental damage.

CNN: Kids on mountain

The team will face some of the toughest conditions on Earth - near permanent darkness and temperatures dropping close to -90C.

BBC: Ranulph Fiennes pulls out of Antarctic challenge

And water would be all the more exciting on Ganymede because it is the largest moon in the solar system (larger even than the planets Mercury and Pluto) and, like earth, it has a permanent magnetic field that protects part of its surface from bombardment by certain sorts of life-destroying radiation.

ECONOMIST: Blue moon