How would you write the years 1951 and 1964 in Chinese characters?
go to Google Translate
select translate English to Chinese
input "one nine five one, one nine six four" --> Result = "一九五一，一九六四"
input "year" --> Result = 年


1951 = 一九五一年

1964 = 一九六四年

You can omit 年 if you just want straight translation of 1951 and 1964