Traditional theory and institution focus on the subrogation institution's function on protecting the obligation right, while modern ones pay more attention to realizing it.

传统理论与制度强调代位权保全债权的功能，而现代理论与制度则更注重代位权实现债权的功能。

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An option is a derivative contract that gives the purchaser the right, but not the obligation, to buy or sell an asset at a certain price.

期权是一种只给买方带来权利，而不需买方承担义务，使其可在未来以某一确定价格买卖资产的衍生品。

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You have the right and the obligation to love yourself first!

你有权利、也有义务先去爱自己！

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He should have asserted that the federal government had neither the obligation nor the right to stop the publication of a book.

NEWYORKER: Money Unlimited

Ultimately, our nation, like all nations, has the right and obligation to control its borders and set laws for residency and citizenship.

WHITEHOUSE: President Obama on Comprehensive Immigration Reform

He criticized states that argued for "the right and obligation to use force pre-emptively" to head off perceived threats, but he urged the Security Council to figure out how to deal with similar questions in the future.

CNN: Chirac: Iraq war undermined U.N.