In prehistoric time people from Africa and Asia migrated to other continents.
在史前时代，人们从亚洲和非洲迁移到其他大洲。
To save the human race, scientists develop a time machine allowing people to travel 85 million years back in time to prehistoric Earth.
科学家发明了一个巨大的时光机器，使人们能在时间的长河里自由穿梭。
There was a time when during prehistoric times, people used to communicate in sign languages.
曾经有一段时间，在史前时代，人们用来沟通的手势语言。
You wouldn't want to develop an application only to find out you're going to have to be stuck in the "prehistoric age" for a long time due to no regular updates.
你不会因为它长时间不更新而让自己开发的应用陷入到“史前时代”的境地吧！
You wouldn't want to develop an application only to find out you're going to have to be stuck in the "prehistoric age" for a long time due to no regular updates.
你不会因为它长时间不更新而让自己开发的应用陷入到“史前时代”的境地吧！
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