lastly

最后，我必须强调守时的重要性。

___Lastly, I must emphasize the importance of punctuality.

最后，我想补充一点，团队的努力非常出色。

___Lastly, I'd like to add that the team's effort was outstanding.

最后，我要感谢每一位参与此次活动的人。

And ___lastly, I'd like to thank everyone who took part in the event.