betake; devote oneself to; apply oneself to; turn to

1. 他致力于學(xué)英語。
   He committed himself to studying English.
2. 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.
3. 她畢生致力于科學(xué)。
   She dedicated her life to science.
4. 他致力于哲學(xué)研究。
   He devoted himself in philosophical study.
5. 他現(xiàn)在認(rèn)真地致力于這項工作了。
   Now he applied himself to the job in earnest.

力的英語翻譯：

于的英語翻譯：