HINTS:

十以上數字、年份、百分率、金額等都用阿拉伯數字表示，數字采用千位逗號隔斷

David Goldspink
The age-old riddle of why many women live longer than men has been solved. It's their pumping power, British researchers have found. On average, women live five years longer than men and women over the age of 60 are now the fastest-growing section of the British population. The average male heart becomes weaker with age, and by the age of 70 its power to pump blood around the body could have decreased by up to a quarter of its youthful strength. David Goldspink, Professor of Cell and Molecular Sports Science at Liverpool John Moores University, said yesterday that women's longevity is linked to the strength of their hearts. Unlike men, they pump just as strongly at 70 as they do at 20.
長期以來困惑人類的難解之謎——為何多數女性比男性長壽——已經找到了答案。英國研究者們發(fā)現，原因在于心臟的供血動力。 女性的平均壽命要比男性多5歲。而目前英國增長速度最快的人群正是60歲以上的女性群體。 一般情況下男性的心臟隨著年齡增長而衰老。男性到了70歲時，心臟向全身供血的能力最多可能減少為年輕時的3/4。 昨天（1月10日），利物浦約翰摩爾大學的細胞及分子運動學教授大衛(wèi)·葛茲平克說，女性的長壽與她們的心臟活力有關。和男性所不同的是，70歲女性的心臟和20歲時一樣強健有力。