Uninterested /ʌn'ɪnt(ə)rɪstɪd/ is an adjective. It means inattentive or unconcerned.

是一个形容词。意思是不感兴趣的或不关心的。

Paul, I am quickly becoming uninterested in your ideas.

保罗，我很快就对你的想法不感兴趣了。

(Paul's ideas arouse no interest.)

保罗的想法没有引起人们的兴趣。

I used to collect stamps, but I am uninterested these days.

我过去常集邮，但现在我不感兴趣了。

(I find it boring these days.)

这些天，我觉得集邮很无聊。

Disinterested /dɪs'ɪnt(ə)rɪstɪd/ is also an adjective. Its noun form is disinterest. Disinterested means not taking sides or impartial. It is usually used to describe a person with no personal benefit at stake.

Disinterested也是一个形容词，它的名词形式是disinterest。Disinterested意为不偏袒任何一方或不偏不倚。它通常用来描述与个人利益无关。

We are struggling to identify twelve disinterested people for the jury.

我们正在努力为陪审团确定12名公正无私的人。

The referee was not disinterested in the outcome of the match.

裁判在比赛的结果上并不公正。

(The referee had a personal interest in one particular side winning.)

比赛中某一方的输赢与裁判个人有利益关系。