In former times, barbarians were people from other countries who were thought to be uncivilized and violent.
例句
The Roman Empire was overrun by Nordic barbarians.罗马帝国被日耳曼的野蛮人推翻了。
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粗野的人；凶残的人
If you describe someone as a barbarian, you disapprove of them because they behave in a way that is cruel or uncivilized.
例句
Our maths teacher was a bully and a complete barbarian...我们的数学老师是个坏蛋，一个彻头彻尾的野蛮人。We need to fight this barbarian attitude to science.我们需要与这种对待科学的野蛮态度作斗争。
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粗人；没教养的人；缺乏文艺修养的人
If you refer to people as barbarians, you mean that they do not know how to behave properly and do not like or understand art and culture.
例句
The people, he thought, looked upon all Americans as barbarians.在他看来，这些人觉得美国人素质都很低。