Disaster rescue, by its very nature is a high-risk activity.

本质上，灾难救援是一项高度危险的行动。

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Enterprise merger is the main mode of capital operation and high-risk activity.

企业并购是资本运营的主要方式，也是一项高风险的经济活动。

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Tick bites and Lyme disease as playing outdoors has been identified as a high-risk activity.

5 - 13儿童在进行户外活动时，极易被蜱虫叮咬，感染莱姆病，已被列为高风险活动。

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Laura Middleton says the research showed that even low-intensity activity reduced the risk of thinking problems and memory loss.

VOA: special.2011.07.27

Inspectors made unannounced visits to ensure companies are managing high-risk activity, such as working at height.

BBC: HSE fails quarter of London building site safety checks

Let's prohibit them from really high-risk activity.

FORBES: Magazine Article

"This fly-by is a very high-risk space activity, " said the mission's chief engineer, Marc Rayman.

CNN: Spacecraft set for risky asteroid flyby