In a given area, the worst will usually be over in four to six weeks as the virus rushes through a susceptible population, cases peak and infections decline with equal speed.

在既定区域，最坏的情况是，当病毒急匆匆地冲向易感人群后的四到六周内，病例数到达顶峰，接着匀速下降。

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A homebuyer in Miami, say, could offset the risk of price decline in the local area with a housing derivative.

比如说，通过房价衍生品，迈阿密的房屋购买者可以对冲该地区房价的下跌风险。

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Farmers in the area have seen a significant decline in the marsh's productivity as successive droughts have driven away many animal populations.

该地区的农民们注意到了沼泽地生产力的重大下降，以及随之而来的干旱使得大量动物种群迁出。

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When the interurban rail line and trolley cutting through the neighbourhood were taken out of service in 1939 and 1941, the area went into rapid decline.

BBC: Seattle��s Fremont neighbourhood

Since then, the information sector decline has slowed and last year the area eked out growth of 0.4%.

FORBES: The Cities Winning The Battle For Information Jobs

"The lost performances and the understandable slower return to Broadway by our tri-state area theatergoers contributed to the decline in both grosses and attendance, " said Charlotte St.

WSJ: Broadway box office, attendances dip this season