The scientist Bell invented the telephone in a certain year in the 19th century (1800-1899). The sum of the numbers in that year is 22, and the ones digit is 1 less than the tens digit. Do you know which year it is?
科学家贝尔在19世纪(1800～1899年)的某年发明了电话，该年份的各个数字之和是22，且个位数字比十位数字少1，你知道这是哪一年吗？
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