The origin of the custom is lost in the mists of time.
这种习俗的起源现已淹没在时间的迷雾中。
The origin of the moon is virtually an open question at this time.
实际上，到现在为止，月球的起源还是个未解之谜。
Save your time to learn some stories on the origin of the Christmas tree.
腾出时间来听听有关圣诞树起源的故事吧！
The origin of the room is virtually an open question at this time.
实际上，到现在为止，月球的起源还是个。
Everything on earth has its origin, growth and decay in a particular period of time.
地球上的任何一个事物都要在一个特定的时期内经历发源期、成长期和衰亡期。
Origin of humankind is a big difficult problem of science at the present time.
人类起源是当代的一大科学难题。
Whether is money the origin of good or evil has been a long-time-discussed topic.
金钱到底是万恶之源还是万善之源已经被讨论了很久。
The country-of-origin effect has been studied for a long time by the international communication academics.
国际传播学界关于来源国效应的研究由来已久。
The country-of-origin effect has been studied for a long time by the international communication academics.
国际传播学界关于来源国效应的研究由来已久。
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