You would also use formal English in compositions and essays that you write in school.

你也会在写学校的作文和论文时使用正式的英语。

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In business situations, use formal titles unless the people you meet tell you otherwise.

在商业场合，除非对方告诉你不需要用敬语，否则就得用正式称呼。

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In between are the people who use formal verification tools to construct these systems.

那些使用常规验证工具建立这些系统的人们处于这两者之间。

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The examples we've done so far have been pretty straightforward, so we haven't needed to use formal charge to make this kind of decision.

我们之前做过的例题,都是非常简单直接的，因此我们还不需要,用形式电荷来做这种决定。

麻省理工公开课 - 化学原理课程节选

You can use this in social setting, business setting, casual or formal, whatever.

你可以在社交场合与商务场合使用这个句型，不管是随意或是正式的场合都适用。

I want to 课堂 - SpeakingMax英语口语达人

So, these are the different ways that we can actually go ahead and use formal charge when we're choosing between different types of Lewis structures.

那么，这些就是在我们需要在,不同的路易斯结构之间做选择的时候,我们如何用形式电荷来进行判断的各种方法。

麻省理工公开课 - 化学原理课程节选

What kinds of news organizations tend to be big, have lots of writers and bureaus all over the map, use formal language with high standards of copy editing, and have been around long enough to have established reputations?

FORBES: Why Publishers Need to Stop Worrying and Learn to Love Google

"Jules and Jim" evokes a vanished world where people would shake hands and use the formal "vous" form when addressing even intimate friends.

WSJ: Jules and Jim | For the Love of a Fickle Woman | Masterpiece by Peter Cowie

"It's a community space for everyone to use, and will be there for formal and informal use, in a similar way to Guildhall Square, " she said.

BBC: Derry to fall in love with 'reclaimed' parade ground