正式聚会上穿牛仔裤不合适。

Jeans are not appropriate for a formal party.

《牛津词典》

这是小型的非正式聚会，你用不着刻意打扮。

It's a small informal party - you don't have to dress up.

youdao

我感觉穿这件裙子参加那聚会太正式了。

I have a feeling that this dress will be too formal for the party.

youdao

你知道这是个非正式的聚会。

It's a casual party, you know.

youdao

这类聚会是“(全球)权力的非正式机制”之一。

As such, they are one of "the informal mechanisms of [global] power".

youdao

我们应该找个更正式的环境聚会。

We should seek more formal settings for the party.

youdao

可这个聚会很随便，不那么正式。

But it's a very casual gathering, not a formal occasion.

youdao

我感觉穿这裙子参加聚会太正式了。

I have a feeling that this dress will be too for the party.

youdao

你用不着穿正式服装去参加这次聚会。

You don't need to dress up for the party.

youdao

你用不着穿正式服装去参加这次聚会。

You don't need to dress up for the party.

youdao