Used as part of greeting of two people who have not been in contact for a long time.(interjection)
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Use "long time" in a sentence
"The frequently long time frame between getting a vaccine and developing autoantibodies as a result can make it hard to cast such associations as cause and effect."
"Thanks also to my wonderfully astute agent, Lauren Abramo, a perfect match a long time in the making."
"“It takes a long time to become a real ballerina like Aunt Georgia.”"