久久一区二区三区超碰国产精品,亚洲人成在线网站,国产在线精品一区免费香蕉,国产精品免费电影

Cambrian
核心詞議：

速記方法


知識擴展


中文詞源： Cambrian
精選例句

常見考點例句：

One of the greatest mysteries of the history of life is the cambrian explosion .

寒武紀的大爆炸是生命史中最大的謎團之一。

During the cambrian explosion , major paradigm shifts took only tens of millions of years .

在寒武紀生命大爆發期間，主要模式轉化只用了數千萬年的時間。

The ediacaran fossil record thus stretches the origins of animals to well before the cambrian explosion .

埃迪卡拉化石的發現，將動物的形成時間從寒武紀又推早了不少。

During the cambrian period , 500 million years ago , worm-like creatures were evolving into fish-like creatures .

在5億年前的寒武紀，似蠕蟲生物逐漸演化成似魚生物。

Animals - including human beings - trace their origins back to the oceans of the cambrian period more than half a billion years ago when the first multicellular organisms that fed exclusively on onther living things appeared .

動物----包括人類---起源于10億年前寒武紀時代的海洋，那時出現了第一個多細胞生物，它只靠吃其他已出現的生物為生。