年龄的简单计算方法：2023 减去出生的年份，所得结果就是年龄。比如2005年出生，2023 - 2005 = 18，就是18岁。（Simple way of age calculation: 2023 minus the year of birth, the result is the age number. For example, born in 2005, the age is 2023 - 2005 = 18 years old）
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