机构员工流动率越高，职位空缺发生率以及职位空缺率越高；

The higher the labor turnover rate in units, the higher the job vacancy incidences and the vacancy rates are.

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虽然职位空缺率以有稍许改善——the city 上升了约8.8%，the west end 上升了约6.7%，但仍有人担心明年也许会迎来新一轮的商业衰落与冲击。

Although office-vacancy rates have improved slightly—to around 8.8% in the City and 6.7% in the West End—there are fears that a fresh wave of business failures and firings will occur next year.

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尽管早期研究中倾向于对空缺职位的增长率提出了假设，二人通过更基本的假设解决了这一问题，即工人和雇主的动机的假设。

Whereas earlier analysis had tended to make assumptions about the rate at which job vacancies arose, the two figured this out from more basic assumptions about the incentives of workers and employers.

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