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Cowan described, for example, how some of the neutrons released during the fission of uranium 235 were captured by the more abundant uranium 238, which became uranium 239 and, after emitting two electrons, turned into plutonium 239.
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例如,柯文描述了某些铀235分裂所释放的中子,如何被含量更多的铀238捕捉而产生铀239,在放射出两个电子后又变成钸239。 |
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Cowan, Ruth S. More Work for Mother. Basic Books, 1985.
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《为母亲而努力工作》。基础教材,1985。 |
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Coward are not made of the same metal as heroes.
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懦夫不是同英雄用一样的铁打的。 |
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Coward as he is (=Though he is a coward), he can't bear such an insult.
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虽然他是懦夫,却无法忍受这样的侮辱。 |
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Coward: one who in a perilous emergency thinks with his legs.
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懦夫:一个在危急关头只想到他的双腿的人. |
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Cowards always quail before the enemy.
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在敌人面前,胆小鬼们总是畏缩不前的。 |
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Cowards call themselves cautious and misers thrifty.
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胆小鬼说自己谨慎,守财奴称自己节俭。 |
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Cowards die many times before their death.
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懦夫一生要经过许多次死的痛苦。 |
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Cowards die many times before their deaths; the valiant never taste of death but once.
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懦弱的人在死亡来临前早已被吓死了好几次,而勇者一生中则只尝过一次死亡。 |
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Cowards die many times before their deaths;The valiant never taste of death but once.
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胆小鬼在他们死前就已经死过很多次了;勇敢的人只能体会到一次死亡。 |
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Cowboy Pete's new breed of long-legged horses was the envy of all the local cowboys – until he realized he had to first mount his steed.
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牧童皮特的新品种长腿良驹实在让当地其它牛仔们艳羡不已——不过要跨上这匹爱马可真不容易。 |