Japan’s population fell by more than 3 million over the past five years, according to official statistics released on Friday, a drop that underscores the depths of the country’s accelerating demographic crisis. 根据周五发布的官方统计数据，过去五年日本人口减少了逾300万。这一降幅凸显出该国日益加深的人口危机之严峻。…