Pressure bump mostly occurring in developing workings is a hazard posing severe menace to mining operations.

冲击地压是一种严重威胁矿井生产的灾害，大部分发生在采准巷道。

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Cardiovascular disease has been among the gravest diseases with morbidity and mortality both ranking the first overtaking that of tumours, posing severe threat to mankind.

心血管疾病是当今世界上威胁人类最严重的疾病之一，其发病率和死亡率已超过肿瘤性疾病而跃居第一。

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However, the OECD warned that global imbalances remained severe, and in some cases were widening again, posing risks to the recovery.

但该组织警告说，全球失衡仍很严重，而且在某些方面正再度扩大，对复苏构成风险。

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On the the 40th anniversary of Earth Day, this warming planet we live on is posing serious new challenges to human civilization: increasingly severe droughts, floods,and storms across the globe, and slowly rising ocean levels.

VOA: standard.2010.04.21

With the deteriorating Russian nuclear arsenal posing a severe environmental threat, U.S. military officials believe the real challenge for the U.S. is not Russia's military strength but its weakness.

CNN: Accident typifies plight of Russian military