《明史·志·卷十一》
闰月有进退，仍然按定朔没有中气来确定闰月。
闰有进退，仍以定朔无中气为定。
The intercalary month can be advanced or delayed. The intercalary month is still determined with the new moon without the central solar term.
<s>[INST] 用英语解释这段文言文的意思: 闰有进退，仍以定朔无中气为定。 [/INST] The intercalary month can be advanced or delayed. The intercalary month is still determined with the new moon without the central solar term.</s>
用英语解释这段文言文的意思: 闰有进退，仍以定朔无中气为定。
user
The intercalary month can be advanced or delayed. The intercalary month is still determined with the new moon without the central solar term.
assistant