finally  
adverb uk/ˈfaɪ.nəl.i/ us/ˈfaɪ.nəl.i/
  (AFTER TIME)      
 A2 最后;终于
after a long time or some difficulty
  We finally got home at midnight. 我们终于在午夜时分到了家。 
 After months of looking he finally found a job. 在找了好几个月之后他终于找到了一份工作。 
 - More examples
 - We finally agreed a deal.
 - So Susannah and Guy finally got married, did they?
 - The plan hasn't been finally approved.
 - She finally apologized, but she wasn't very graceful about it.
 - After months of working, he finally finished the garden.
 
  (LAST)      
 B1 (尤用于句首)最后
used especially at the beginning of a sentence to introduce the last point or idea
  Finally, I'd like to thank everyone for coming this evening. 最后,我要感谢各位今晚光临。 
 - More examples
 - And finally, we'll take a look at the weather forecast.
 - Finally, sprinkle some grated cheese over the dish.
 - Finally, drain the pasta and mix with the sauce.
 - Finally, what has been the highlight of your career so far?
 - And finally, a reminder of today's headlines.
 
  (CERTAINLY)      
 UK最终地,决定性地 
in a way that will not be changed
  The plan hasn't been finally approved. 计划还没有获得最终批准。