双语例句原声例句权威例句
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But such studies, notes Kempf, can only detect sodium in its gaseous form, not the solid sodium in the frozen ice particles.
但是这些研究结果，只是基于气态的钠元素的检测。他们并没有仔细的检测那些存在于冰晶颗粒中固态钠元素。
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From the moment life began on the planet billions of years ago, the climate has swung drastically and often abruptly from one state to another - from tropical swamp to frozen ice age.
自从几十亿年前地球上出现第一个生命开始，气候就剧烈地变化着，时常是从一个时期突然进入另一个时期——从炎热的湿季到冰冻期。
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They are made up of ice and other frozen liquids and gases.
它们是由冰、其他冷冻液体和气体构成。
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One is in the U.S.at the Centers for Disease Control, where there is a sample of variola, which is kept, you know, frozen on ice in a heavily guarded facility.
一个在美国的疾病控制中心,那有一支天花病毒的样本,冰冻后置于重重保护之下
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