《资治通鉴·汉纪·汉纪五十四》
于是曹操派遣扬武中郎将曹洪率兵向西，到洛阳迎接献帝。董承等扼守险要阻拦，曹洪不能前进。
操乃遣扬武中郎将曹洪将兵西迎天子，董承等据险拒之，洪不得进。
So Cao Cao sent Cao Hong, the general of the expedition, to lead troops westward to Luoyang to welcome Emperor Xian. Dong Cheng and others guarded the key points and blocked them, and Cao Hong could not advance.
<s>[INST] 将以下文言文流畅地翻译成英语: 操乃遣扬武中郎将曹洪将兵西迎天子，董承等据险拒之，洪不得进。 [/INST] So Cao Cao sent Cao Hong, the general of the expedition, to lead troops westward to Luoyang to welcome Emperor Xian. Dong Cheng and others guarded the key points and blocked them, and Cao Hong could not advance.</s>
将以下文言文流畅地翻译成英语: 操乃遣扬武中郎将曹洪将兵西迎天子，董承等据险拒之，洪不得进。
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So Cao Cao sent Cao Hong, the general of the expedition, to lead troops westward to Luoyang to welcome Emperor Xian. Dong Cheng and others guarded the key points and blocked them, and Cao Hong could not advance.
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