BYA:十亿年前
“Billion Years Ago”(十亿年前)常缩写为BYA,这一简写形式广泛用于地质学、天文学和古生物学等领域。它能够便捷地表达漫长的时间跨度,尤其在涉及地球演化、宇宙历史和生命起源的讨论中,BYA有助于简化书写,提高专业交流的效率。
Billion Years Ago具体释义
Billion Years Ago的英文发音
例句
- A billion years ago, the Moon was much closer to Earth than it will be tonight.
- 十亿年前(BYA),月球与地球之间的距离可比今晚它俩之间的距离要近得多。
- Yet oxygen gas did not begin to accumulate in the atmosphere until about 2 billion years ago.
- 但是大约在20亿年前,氧气才开始在大气层中积累。
- Today, scientists think that the sun, the earth, and the other planets in our solar system were formed at least five billion years ago ( 1 ).
- 现在,科学家认为,我们太阳系中的太阳、地球和其他行星,至少是在五十万年以前形成的。
- Some researchers have suggested that impacts on the moon began to taper off4.3 billion years ago, only to resume with a vengeance in a " cataclysm " 400 million years later.
- 一些研究者认为,冲击对月球的影响开始削弱始于43亿年前,直到4亿年以后才从这个“大灾难”中恢复来。
- Life seems to have originated in the primordial oceans that covered the Earth four billion years ago.
- 生命看来似乎起源于40亿年前覆盖着地球的原始海洋。
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