These adjectives mean right or correct in view of existing circumstances. They are often interchangeable.

考虑到存在环境时，这些形容词都意为“恰当的或正确的”且通常可以互换。

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The existing circumstances of international trade and production in almond were investigated in this article.

本文中，研究了扁桃国际贸易和生产的现状。

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The paper analysis the existing circumstances and problems about foreign capital Mergers and Acquisitions domestic enterprise.

本文分五个部分对外资并购我国企业的现状和问题作了分析。

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As we watch the events unfolding in Japan and hope for the best possible outcome given the existing circumstances, realize that the economic impact of the tragedy remains unknown.

FORBES: When All Else Fails, Go Long

But we have to adapt to existing circumstances.

WHITEHOUSE: Presidential Press Conference

Accordingly, clients and their advisors, increasingly, are looking for ways to modify existing estate plans, particularly focusing on irrevocable trusts, when circumstances change.

FORBES: "Fixing" the Broken Estate Plan