They all tutoyer each other, even if they hate each other's politics, and they call each other by the informal name.

人们表面亲热,即使他们与对方的政见相对立,他们用非正式的名字称呼对方

耶鲁公开课 - 1871年后的法国课程节选

Well, that's pretty difficult. It, you know, I think it's easiest to do that in sort of an informal way.

分配起来确实挺困难的。你知道的，以一种非正式的方式反而更容易做到。

有趣的室友们 - SpeakingMax英语口语达人

By our informal count, however, we and the Afghan commandoes we work with were stopped on 70 percent of our attempts because we could not achieve the requisite 11 approvals in time.

粗略估算了一下，与我们一道工作的阿富汗突击队,有70%的尝试都失败了,因为我们不能按时拿到所需的11个批准。

普林斯顿公开课 - 国际座谈会课程节选

All right, so before I begin I just want to say I want to keep this pretty informal so feel free to jump in if you have comments, questions if you disagree with me.

在我开始之前,我想说,不需要那么正式,如果大家有什么见解或者问,如果大家有什么不同意见,希望大家有一些不同的见解。

麻省理工公开课 - 电影哲学课程节选

He was very informal.

他生性十分随意

耶鲁公开课 - 欧洲文明课程节选

But we also know there needs to be space for other conversations. In fact I think many of the conversations are that they have started on the community action trip that they might take as they enter freshman year or the outdoor action trip or other informal ways of making connections.

但是，我们也知道，他们也需要,进行其他对话的空间，实际上,我认为这些对话发生在很多活动中,比如说，学生们在大一时可能参加的,一些社区活动,或者是一些课外旅行,或者是其他一些娱乐交流活动。

普林斯顿公开课 - 人性课程节选

now we're not just talking about 1 photon, 1/2 let's say we shoot them all at the same time at our metal, each of them having some energy that's let's say 1/2 the work function. So, just to take a little bit of an informal survey, who thinks here that we will have an electron that is ejected in this case?

我们现在不仅仅讨论一个光子，它们所具有的能量是功函数的，我们在同一时刻把它们打到金属上,我们做一个不太正式的调查,谁认为这种情况下,一个电子会被打出？

麻省理工公开课 - 化学原理课程节选