the final part of something

Be careful not to introduce new ideas in the conclusion of your essay. 注意不要在你的论文结论部分引入新的想法。

finally

In conclusion, I would like to thank our guest speaker. 最后，我要感谢我们的演讲嘉宾。

In conclusion, I want to say how pleased I am to see education as our number one priority.

So, in conclusion, I think we should not hesitate to take this opportunity.

In conclusion, Norris argued that the business was unlikely to survive.

In conclusion, he wished us all well and asked to be remembered to the other members of our community.

the act of arranging or agreeing something formally

the conclusion of the deal/treaty 协议的达成／条约的缔结

the opinion you have after considering all the information about something

Did you come to/reach/draw any conclusions at the meeting this morning? 今天上午的会议上你们有没有作出什么决定？

[ + that ] At first I thought he was a bit shy, but I've come to the conclusion that he's simply unfriendly! 起初我以为他有点害羞，可是后来我断定他就是不友好！