Sensing a false performance, he shouts an expletive.

察觉到虚假的表演，他大声咒骂。

It is what grammar experts call an expletive.

这就是语法专家所说的虚词。

When we make a mistake, the first thing we say is often an expletive.

当我们犯错时，我们说的第一句话通常是脏话。

Ok, but why would I use an expletive if it has no meaning?

好吧，但是如果虚词没有意义的话，我为什么要用它呢？

Every expletive you can imagine came out of my mouth.

你能想到的所有脏话都从我嘴里说了出来。

An expletive is usually a swear word or curse word.

脏话通常是指诅咒或咒骂的话。

It's no surprise that they reacted more positively and with far fewer expletives.

不出所料，他们的回应都比较积极，抱怨的话远比我想象的少了。

But the individual word " there" (an expletive) doesn't have a meaning.

但是 there（虚词）一词没有意思。

Well, it says we're supposed to be talking about expletives, but I don't think that's appropriate.

它说我们应该讨论咒骂语，但我认为这并不合适。

Other times it will simply start to spell out expletives.

其他时候， 它只会开始拼出咒骂。