Hospital exposure, contact to measles patients and floating population were risk factors which made this disease spread.

医院暴露、与麻疹病人接触、人口流动是本次麻疹传播的重要危险因素。

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As a result, the floating population to contain the spread of HIV is no time to lose.

因此，遏制流动人口的艾滋传播已刻不容缓。

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The results showed that TMV spread mainly by clipping with very high efficiency, and clipping was the most important and effective approach of tobacco mosaic spreading in floating seedbed system.

结果表明：各种剪叶方式均能传播TMV，而且传播效率极高，剪叶是漂浮育苗中TMV引起的烟草普通花叶病在苗期传播的最主要、最有效的途径。

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Speaking of 'tween heartthrobs, Scott Brown is here. (Applause.) I admire Scott -- a rare politician in Washington with nothing to hide. (Laughter.) Now, you should be aware that Scott Brown is not the only one with a salacious photo spread floating around.

WHITEHOUSE: President Obama and Jay Leno at White House Correspondents Dinner | The White House

Take, for example, one indicator of the market's appetite for risk, the spread between swaps of fixed- and floating-rate interest payments (see chart).

ECONOMIST: Nothing to fear but fear itself