You use finally to suggest that something happens after a long period of time, usually later than you wanted or expected it to happen.
The food finally arrived at the end of last week and distribution began.
食物终于在上周末运到并开始分发。
You use finally in speech or writing to introduce a final point, question, or topic.
Finally, and perhaps most importantly, Project Challenge has raised awareness of the issue.
最后一点,或许也是最重要的一点,项目挑战已提高了人们对该问题的认识。