这就是非洲没有被征服的双重原因。

Now the reason why Africawasn't conquered is two-fold.

youdao

当时他下那想精钻一个没有被征服的机器人领域——即适应性能力。即机器人可以根据其周围环境的改变而调整其计划的能力，就像人那样。

But he wanted to try to master an area of robotics that remains unconquered - adaptability, the ability of the robot to rethink its plans as the environment around it changes, as would a human.

youdao

从那以后，那些古老的野蛮人因为没有被罗马人征服而饱受赞誉。

From then on, those ancient barbarians were praised for never having been conquered by the Romans.

youdao

All is not lost; the unconquerable Will, And study of revenge, immortal hate, And courage never to submit or yield: And what is else not to overcome?

我们没有完全失败，那无法被征服的意志，复仇的信念，永恒的仇恨，以及我们的勇气，不曾消逝：,还有什么能将我们击溃？

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