《宋书·志·卷二十六》
元徽四年三月乙巳，月犯房宿北头第一丛，进而犯键闭星。
元徽四年三月乙巳，月犯房北头第一星，进犯键闭星。
<s>[INST] For each of the following sets of Classical Chinese and Modern Chinese sentences, provide an English translation that captures the essence of both: Classical: 元徽四年三月乙巳，月犯房北头第一星，进犯键闭星。 Modern: 元徽四年三月乙巳，月犯房宿北头第一丛，进而犯键闭星。 [/INST] None</s>
For each of the following sets of Classical Chinese and Modern Chinese sentences, provide an English translation that captures the essence of both: Classical: 元徽四年三月乙巳，月犯房北头第一星，进犯键闭星。 Modern: 元徽四年三月乙巳，月犯房宿北头第一丛，进而犯键闭星。
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