It has a very informal atmosphere, quite unlike some grand houses you visit.

它有一种非常随意的气氛，与你参观的一些豪宅不同。

youdao

I have kept a record of informal conversations involving some 300 students from at least twenty-one colleges and universities.

我记录了来自至少21所高等院校的300名学生的非正式谈话。

youdao

"Cheers", despite its popularity, is considered an informal way to say thank you—and this is a definite clue as to when you can best use it.

尽管“干杯”很受欢迎，但它被认为是一种非正式的表达感谢的方式——这也就明确说明了什么时候使用它是最合适的。

youdao

A government spokesman says the government is trying to discourage informal schools.

VOA: special.2009.08.24

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

Johnson says that her students, over the past several years, have increasingly used a more informal English vocabulary in formal assignments.

VOA: standard.2010.01.16

Latin America's overall record of productivity growth is poor, thanks to a toxic mixture of burdensome regulation, a large informal economy and a lack of innovation.

ECONOMIST: Productivity in Latin America

Was it sort of the informal, a lunch here and a phone call there -- or does he foresee something more structured?

WHITEHOUSE: Press Briefing

Informal to a fault, Google offices are littered with party-colored lava lamps, bins of free Coke and candy and giant plastic balls that invoke Google's multicolored logo.

FORBES: Companies & Strategies