多年来 (duō nián lái): for the past many years

For many years, he has gone to the park every morning to practice tai chi, and he has always been in good health.

For many years, this small bookstore has been providing free reading space for nearby residents.

For many years, she has kept a diary to record the little details of her life, and now she has filled ten thick volumes.

For many years, scientists from the two countries have collaborated on climate change research and achieved many important results.

For many years, he quietly sponsored impoverished students, and it was only recently that everyone found out.