Yes, Virginia, they do exist.

是的，弗吉尼亚州，它们的确存在。

youdao

However, barriers do exist.

但是，壁垒确实存在着。

youdao

Rules for recusal do exist.

回避规则确实存在。

youdao

Astronomers now agree that far distant galaxies do exist.

VOA: special.2009.04.29

But having a few pages of authoritative note do exist.

但是有几页重要的记录是应该阅读的。

哈佛公开课 - 计算机科学课程节选

If you find this argument convincing, what it's an argument for is the claim that even if souls do exist, they may not be the key to personal identity.

如果你信服这个观点，我们要证明的是,就算灵魂真的存在，也不是人格同一性的关键。

耶鲁公开课 - 死亡课程节选

Stocks that are both low-risk and superb performers do exist, if you undertake dedicated research.

FORBES: Two Low-Risk Stocks That Are Also Mighty Market Achievers

Those that do exist often rely on self-reporting or polling and are limited in scope.

FORBES: In Pictures: America's Illegal Drug Capitals

If you have less than three hours, worthy shopping options do exist inside the airport.

BBC: Four authentic Asian layovers