strange, unfamiliar, or a little surprising

奇怪的; 异常的:

There was a peculiar smell in the kitchen.

厨房里有一股怪味。

Something peculiar is going on.

出了怪事。

It seems very peculiar that no one noticed Kay had gone.

没有人注意到凯已经走了，这好像很奇怪。

be peculiar to sb / sth, if something is peculiar to a particular person, place, or situation, it is a feature that only belongs to that person or only exists in that place or situation

为某人/某事物所特有:

The problem of racism is not peculiar to this country.

种族歧视问题并不只是这个国家才有。

behaving in a strange and slightly crazy way

〔行为〕怪癖的，有点疯狂的:

He's been a little peculiar lately.

最近他显得有点怪异。

She's a very peculiar child.

她是个非常古怪的孩子。

feel peculiar / come over all peculiar, [BrE informal] to feel slightly ill

感到有点不舒服