《资治通鉴·汉纪·汉纪七》
 陛下拒绝与匈奴和亲，我私下估计他们冬季会向南进犯；边境一旦大治，就可以重创匈奴，使他们终身不振恢复不了元气。
陛下绝匈奴不与和亲，臣窃意其冬来南也；壹大治，则终身创矣。
His Majesty refused to marry the Xiongnu, and I secretly estimated that they would invade the south in winter; once the border is well governed, the Xiongnu can be severely crushed, so that they will never be able to recover.
<s>[INST] Explain the meaning of this Classical Chinese passage in English: 陛下绝匈奴不与和亲，臣窃意其冬来南也；壹大治，则终身创矣。 [/INST] His Majesty refused to marry the Xiongnu, and I secretly estimated that they would invade the south in winter; once the border is well governed, the Xiongnu can be severely crushed, so that they will never be able to recover.</s>
Explain the meaning of this Classical Chinese passage in English: 陛下绝匈奴不与和亲，臣窃意其冬来南也；壹大治，则终身创矣。
user
His Majesty refused to marry the Xiongnu, and I secretly estimated that they would invade the south in winter; once the border is well governed, the Xiongnu can be severely crushed, so that they will never be able to recover.
assistant