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@TomAa Example: From "My son was born in 1975 and my daughter was born in 1982" or simmilar alternatives, you can say "My son was born in 1975, and seven years later, my daughter." Sounds better, I think
@TomAa Formal writting can be repetitive and even robotical if it needs to be. But if you are doing narration and want to be engaging you can totally disregard those repetitve phrases and just change them all together.