OK, but what if you want to greet someone informally?

好了，但是如果想非正式地问候别人该怎么做呢？

To pig out is to eat too much of something, very informally.

Pig out 是指吃太多东西，非常非正式的短语。

It is important to know that we only use this expression informally.

重要的是要知道，我们只在非正式场合使用这个短语。

The act of swimming naked is informally called skinny dipping.

裸着游泳这种行为被通俗地称为裸泳。

At the moment I work from home so I tend to dress fairly informally.

目前我在家工，我倾向于穿比较随意。

Yes, you can use it informally; yes, you can use it in person.

是的，可以在非正式的场合用它；是的，可以在面对面交谈的时候用它。

But this idiom is about learning something new by talking to people informally.

但是这个习语是指通过非正式的交谈来了解新的消息。

Of course, speaking informally goes beyond word choice.

当然，非正式语言不仅限于词语选择。

But informally, we call it " snot" .

我们有个不正式的说法，叫 snot。

Other translators chose to have Hagrid simply speak more informally, while others dropped his accent entirely.

其他语言的译者选择让海格用较轻浮的方式说话，虽然这样就完全捨弃掉口音。

You think I look too scruffy, and that I made a mistake by dressing too informally.

认为我看起来太邋遢了，我搞错了场合，穿着太不正式。

We use 'catch' to say goodbye informally.

我们使用“catch”来表达非正式的再见。

Plus, you'll also hear people using this word or this expression really informally as a farewell.

除之外，也会听到别人使用这个单词或者是这个表达为非常不正式的表达再见的方式。

This is common if you're answering the phone informally and you don't know who's calling.

这是非常常见的，如果在非正式的情形中接电话，并且不知道谁打来的话。

More informally, you can also get into something.

更非正式地说，也可以投资一些事情。

That's what makes banding together to take collective action so important, either informally or through a union.

这就是为什么团结起来采取集体行动如重要的原了，不管是非正式的还是通过工会。

Or more informally, " Listen, I've got to be off."

或者更非正式地说，“听着，先失陪了。”

Initially many of these transactions happened informally over social-messaging apps.

最初，许多类交易都是通过社交通讯应用非正式进行的。

Beth, is there anything that you've learnt to do informally?

贝丝，有没有学过什么非正式的东西？

For Americans, the holiday also informally marks the end of summer.

对于美国人来说，这个节日也非正式地标志着夏天的结束。