1. 這位歌手終生致力于研究中國西北部的民間傳說。
   The singer devoted his whole life in study of the folklore in the northwest part of China.
2. 她畢生致力於幫助窮人。
   She dedicated her life to helping the poor.
3. 他畢生致力于科學事業(yè)。
   He dedicated his life to science.
4. 該協(xié)會致力于推動世界和平事業(yè)。
   The society was dedicated to furthering the cause of world peace.
5. 她畢生致力于科學。
   She dedicated her life to science.

力的英語翻譯：