No one knows for certain the origin of the holiday.
没有人确切知道这一节日的来源。
There is not one explanation for the cause or origin of addiction.
对于成瘾症的成因或起源，并没有公认的解释。
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。
The origin of this wonderful mechanism is one of evolution's most durable mysteries.
这种奇妙机制的源点一直是进化史中最难解的谜团之一。
One day she introduced us to the concept of origin.
有一天，她向我们介绍“起源”这一概念。
Part one: The origin of Corporation personality denial system.
第一部分，公司法人格否认制度的产生。
Part one is about the origin and significance of the personal property register.
第一部分为动产物权登记制度的缘起与意义。
No one can confirm the exact origin of these dogs.
没有人能够确定这种犬的确切起源。
To seek the origin of one is to seek the origin of the other.
寻求其中之一的起源，就是寻求另一个的起源。
Here is my precious medicinal animal origin, one of the important deer.
这里还是我国珍贵药用动物麝的重要产地之一。
The origin of the vertebrates is one of the most important transitions in animal evolution.
脊椎动物的出现是动物 进化历史上一次质的 飞跃。
The origin of the vertebrates is one of the most important transitions in animal evolution.
脊椎动物的出现是动物 进化历史上一次质的 飞跃。
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