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1·They talked about the competing theories of the origin of life.

他们谈论那些相互矛盾的生命起源理论。《柯林斯英汉双解大词典》

2·I want to major in biology because I have long wondered about the origin of life.

我想要主修生物学，因为我一直在思考生命的起源。

3·The origin of multicellular forms of life seems a relatively simple step compared to the origin of life itself.

与生命本身的起源相比，多细胞生命形态的起源似乎是相对简单的一步。

4·He remained studying the origin of life.

他仍在研究生命的起源。

5·Pure distilled water is the origin of life.

纯正蒸馏水，生命之源。

6·There're many theories about the origin of life.

关于生命起源的学说有很多。

7·There are many theories about the origin of life.

关于生命起源的学说有很多。

8·There are many theories about the origin of life.

有关生命的起源有多种学说。

9·Water is the origin of life and the lifeblood of agriculture.

水是生命之源、农业的命脉。

10·The origin of life is one of the great unsolved problems of science.

生命起源问题是科学上最悬而未决的难题之一。