Tales have long existed of dogs detecting various types of cancer with their sense of smell.

长久以来就有此说法：狗能够利用其灵敏的嗅觉探测出各种的癌症。

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While these variations have long existed within individual cultures, they're now expanding and comingling online.

虽然这些变化一直存在于各国的文化中，但如今网络使它们相互融合。

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Makeshift encampments of people who don't have permanent homes have long existed on the margins of many U.S. cities.

那些没有永久住房的人们的临时聚集地在美国的很多城市中始终存在。

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This incident brings to mind a lesser-known fact about the Hamptons: it's a place where conservative Wall Street tycoons have long co-existed with artists, many of whom love the delicate, ever-changing light that results from the region being almost entirely surrounded by sea.

BBC: Escape from New York

Internet users have for far too long existed in an ignorant malaise about cybercrime and must now be awoken if they truly value personal data.

FORBES: Don't Forget The Cyber Criminals

These tensions over abortion have existed for a long time.

FORBES: Planned Parenthood, Komen and the Culture War