"It really raises the question of what should be considered normal ageing," says Kenneth Manton, a demographer from Duke University in North Carolina.

北卡罗来纳州杜克大学人口统计学家肯尼斯·曼顿说：“这确实引发了一个问题，即什么是正常的老龄化。”

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Canada had its warmest winter on record, with national temperatures 4c above the long-term average; winter temperatures were 6c or more above normal in parts of the country's north.

加拿大全国气温高于长期的平均气温4摄氏度，是历史上最热的冬天；该国北部的冬季气温高于正常值至少6摄氏度。

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Deep ocean gauges in the north Pacific had detected waves up to 2m above normal sea level, said Chip McCreary of the Pacific Tsunami Warning Centre.

北太平洋的深海测量仪器显示海浪达到了2米，这要高于正常水平，太平洋海啸预警中心的Chip McCreary说。

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The United States says it will never accept North Korea's nuclear weapons, and that normal diplomatic ties will only follow serious steps by Pyongyang to fulfill its disarmament pledges.

VOA: standard.2009.10.23

But he said those movements were likely part of normal North Korean military exercises.

WSJ: U.S. Warns North Korea With Stealth Bomber Flights

Taking my normal north-south route along Crescent Heights, I listen to Tame Impala to calm the nerves and enter another mental state.

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According to a 2011 report on North Korean susceptibility to outside media, radio and DVDs are the most common way for normal North Koreans to hear media from the outside world.

CNN: A Cold War response to North Korea's latest challenge