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A radio telescope's beam depends on the diameter of its dish; the bigger the dish, the narrower the beam.
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射电望远镜的光束依赖于抛物面直径的大小：抛物面越大，光束越窄。 |
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A radio, AM or FM - you can also use your hifi.
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一个收音机，调幅或调频都行-你也可以使用你的音响系统。 |
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A radioactive compound used in radiotherapy or diagnosis.
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放射性药剂一种用于放射性治疗或诊断的放射性化合物 |
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A radioactive isotope of carbon, especially carbon14.
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放射性碳碳的一种放射性同位素，尤指碳14 |
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A radioactive, inert, gaseous isotope of radon, with a half-life of3.92 seconds.
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锕射气氡的一种放射性的，惰性的和气态的同位素，其半衰期为3。92秒 |
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A radiosonde is free to rise to as great an elevation as possible.
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无线电探空仪可以自由地上升到尽可能高的高度。 |
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A rage drake normally attacks using its Power Attack feat, taking a -5 penalty on its attack rolls and gaining a +5 bonus on damage rolls.
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狂暴龙兽通常会使用猛力攻击专长攻击，在攻击掷骰上受到-5减值并在伤害掷骰上得到+5的加值。 |
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A ragged shout went up from the small crowd.
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这一小群人发出了刺耳的喊叫。 |
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A raging passenger: Attendant, didn't I give you 5 dollars to ask you to wake me up at Kelidufu?
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愤怒的乘客：列车员，难道我没给您5美元，让您在克里夫兰叫醒我吗？ |
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A railroad employee who waits on passengers in a sleeping car or parlor car.
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火车中的侍者，服务员火车上的卧铺车厢或特等豪华客车中服务于旅客的雇员 |
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A railroad or bus station.
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公共汽车每站都停。 |
