Long is Britain's best-known Land Artist and his Stone Circle, a perfect ring of purplish rocks from Portishead beach laid out on the gallery floor, represents the elegant, rarefied side of the form.

龙是英国最著名的土地艺术家，他的“石头圈”是由波蒂斯黑德海滩上的紫色石头组成的完美圆环，放置在画廊地板上，展现了该构造优雅脱俗的一面。

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He even had the perfect ring made for me.

他甚至有完美的响我做的。

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This Paper gives and proves the dual module of a projective module over aright hereditary and right perfect ring is stil projective.

本文给出并证明了右遗传、右完备环上投射模的对偶模仍然是投射模。

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Flames quickly surrounded the basket in a perfect ring of fire.

VOA: special.2009.02.28

And the Ring Road is the perfect road trip.

BBC: Wintry sights along icy voyages

Scientists suspected the ring might be present and had the perfect tool in the Spitzer space telescope to confirm it.

BBC: New ring detected around Saturn

It is the perfect place for Idea Monkeys like me and the (Ring)leaders who keep them on track.

FORBES: Mike Maddock - The Idea Monkey - Archive