《后汉书·列传·郭杜孔张廉王苏羊贾陆》
当时匈奴多次骚扰郡界，边民受害受苦。
时，匈奴数抄郡界，边境苦之。
At that time, the Xiongnu often harassed the borders of the prefecture, and the people on the border suffered.
<s>[INST] Kindly elucidate the central themes in this passage in English: 时，匈奴数抄郡界，边境苦之。 [/INST] At that time, the Xiongnu often harassed the borders of the prefecture, and the people on the border suffered.</s>
Kindly elucidate the central themes in this passage in English: 时，匈奴数抄郡界，边境苦之。
user
At that time, the Xiongnu often harassed the borders of the prefecture, and the people on the border suffered.
assistant