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billion years中文

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用"billion years"造句"billion years" in a sentence"billion years"怎麼讀

中文翻譯手機手機版

  • 十億年

例句與用法

  • It has a half-life of about 41/2 billion years .
    它的半衰期大約為45億年。
  • At some time more than five billion years ago the universe started .
    在50億年前的某個時候,宇宙開始形成。
  • The youngest rocks found on the moon are 3 billion years old .
    在月球上發現的地質年代最晚的巖石已有30億年歷史了。
  • Their ancestors have been eating according to flavor for upwards of a billion years .
    他們的祖先已經根據滋味來吃東西吃了十億年以上了。
  • Yet oxygen gas did not begin to accumulate in the atmosphere until about 2 billion years ago .
    但是大約在20億年前,氧氣才開始在大氣層中積累。
  • The best suggestion is that jupiter is still contracting gravitationally despite its age of several billion years .
    最好的說明是:木星盡管已有幾十億年的歷史,但由于引力作用,它仍在收縮。
  • Practically every atom had its origin in the tiny violence of a radioactive disintegration some time within the past few billion years .
    實際上每個原子都來源于過去幾十億年中某一時刻放射性分裂的微小激變。
  • The organisms living between 3 and 1 billion years ago were not as versatile as modern species, probably due to energy limitation .
    生活在過去二十億年之間的有機體可能由于能量的限制,不如現代物種這樣五花八門。
  • A star can persist like this for 10 billion years
    這樣的恒星可以持續一百億年以上。
  • Our solar system was formed 4 . 6 billion years ago
    我們的太陽系被形成了4 . 6十億年前。
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