正式聚会上穿牛仔裤不合适。

Jeans are not appropriate for a formal party.

《牛津词典》

在非正式聚会等场合，站得离某人很近是很合适的，但在其他场合，比如和上司开会，就完全不合适了。

Standing close to someone may be quite appropriate in some situations such as an informal party, but completely out of place in other situations, such as a meeting with a superior.

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这是一次翻译专业人士、同仁和朋友们的非正式聚会。

This Powwow is a casual meet - up of fellow professionals, colleagues and friends.

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