年限 (nián xiàn): age limit; fixed number of years

According to the regulations, applicants for this position must not exceed the age limit of thirty-five.

My passport will expire in half a year; it's nearing its validity limit, so I need to get a new one soon.

This refrigerator has been used for fifteen years, exceeding the manufacturer's specified service life, and it's been acting up lately.

This loan program has a clear age limit for applicants: they must be between eighteen and sixty years old.