Slang, or colloquial language-to use the formal term-is not appropriate in academic writing and many professional communication situations.

俚语，或是口语-用在正式的场合下-出现在学术写作和许多专业沟通时却是很不合时宜的。

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Realization is a formal term in use case modeling that indicates the relationship between a specification of something and its various implementations.

所谓的实现是用例建模中的一个规范化术语，它指示了规格与各种执行之间的关系。

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When people see his girl (or her boy) friend is having fun intimately with another boy (girl), a strong feeling will arise as swallowing down a big bowl of vinegar. That is "jealous"in a formal term.

一个人看见自己的男（女）朋友和别的异性朋友谈得亲热的的时候，就会产生一种情绪，象是一口气喝了一大碗酸醋似的，正式名称是嫉妒。

youdao

Formal, long-term arrangements for a pet can be created with the help of a lawyer in the form of a special will, trust, or other document.

FORBES: Estate Plans Should Include Provisions for Pets

"New leaf" refers not to the world of plants, but to the formal, even archaic, term for a two-sided piece of paper.

CNN: In the new year, be a first responder

As the future on the stadium reaches another landmark on Wednesday, when the formal process of finding a long-term tenant starts, the controversial Hammers bid appears to be among the front-runners.

BBC: West Ham's grounds for optimism over Olympic Stadium