干支纪年法是中国历法上自古以来就一直使用的纪年方法。干支是天干和地支的总称。把干支顺序相配正好六十为一周，周而复始，循环记录，这就是俗称的“干支表”。干支纪年以每年立春换年。 甲、乙、丙、丁、戊、己、庚、辛、壬、癸十个符号叫天干； 子、丑、寅、卯、辰、巳、午、未、申、酉、戌、亥十二个符号叫地支。
阴历用干支纪年。
In the lunar calendar, the years are designated by the Heavenly Stems and Earthly Branches.
宣王纪年是明确的，且有许多出土青铜器所载王年月相干支记录所证实，不能随便更改。
Besides it was approved by the king-year, phase and Chinese era records on the unearthed bronze instruments, so the numbered years of King Xuan are explicit and shouldn't be altered casually.
中国古人发明了用“干支”纪年的方法。
Ancient Chinese people invented the method to designate the years by the Heavenly Stems and Earthly Branches.
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