英语语法分析

By the early eighth century, the empire had lost roughly two-thirds of the territory it had possessed in the year 600, and its remaining area was being raided by Arabs and Bulgarians.

到八世纪早期，帝国已经失去了大约三分之二的领土，其拥有了600年的剩余土地正在遭受阿拉伯人和保加利亚人的袭击。

He went on to complain that Bulgarians were full of doubt and malice.

然后，他开始抱怨：保加利亚人充满了了怀疑和怨恨。

There are incongruities: Saudis are about twice as rich per person as Bulgarians.

欧共体一位官员提出这样的疑问。因为存在矛盾：沙特阿拉伯人均比保加利亚人富有两倍。