That was actually my next question: is performance part of the contract? It does seem that performance is important in the contract sense. People want quality of service guarantees.

这恰恰是我预备的下一个问题：契约在操作性能方面如何表述？看来，从契约角度来说，性能也是非常重要的。人们需要高质量的服务保证。

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In its latest survey of CEO pay, The Wall Street Journal finds that "a substantial part" of executive pay is now tied to performance.

《华尔街日报》最近对首席执行官薪酬的调查发现，现在高管薪酬中“很大一部分”与业绩挂钩。

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States that want to take part in the Race to the Top cannot have rules that bar performance-based pay for teachers.

VOA: special.2009.07.30

She negotiated a new labor contract that measures teacher success based in part on student performance.

VOA: special.2010.10.21

Guitarist Jason Mozersky worked part-time driving bands back and forth to a performance center in Texas.

VOA: special.2009.05.08

Simply put, organizations must make environmental and social performance a part of the way the corporation operates just as much as it does financial performance.

FORBES: Forget Sustainability Programs

Nick Clegg last month promised the government would publish a "candid" audit of the government's performance as part of a Mid-Term Review "which would surprise on the upside".

BBC: UK Politics

They're looking for, of course, their performance in part, but I think the advantage we feel he has is that his policies are ultimately better for the American people.

WHITEHOUSE: The White House