The researchers gave them nasal dro containing either a cold virus or a particular flu virus.

研究人员将带有感冒病毒或某种流感病毒的滴鼻液滴进这些实验对象的鼻中。

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There was this view in the international community that the Chinese economy would suffer a hard landing and China's growth would dro to 3-4%.

国际上也出现了一些舆论，说中国经济可能要硬着陆，还给出了指标，说增长可能只有3%到4%。

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Americans usually like to have advance notice when people come to see them. only very close friends dro by unannounced. This is especially true if the guests want to stay for a few days.

美国人通常喜欢访客事先通知他们，只有非常亲密的朋友才可能不请自来，尤其在客人要待好几天时更是如此。

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Further, it has Auto HDR and D-Range Optimizer, bracket shooting (Exposure, DRO or White Balance) and Auto HDR shooting modes, and there's a Digital Level Gauge that indicates camera pitch and camera roll on the LCD screen for straight, even landscape and architectural shots.

ENGADGET: Sony's Cyber-shot RX1 compact camera packs a full-frame sensor, 'fits in your palm' (hands-on)