As the baby-boom generation ages, America, Europe and Japan will face an explosion in health-care costs unless researchers find new treatments.
随着婴儿潮出生的一代人逐渐老去，美国，欧洲和日本都将面临保健费用激增的局面，除非专家们能找出新的治疗方法。
Japan on Wednesday launched a new generation X-ray astronomy satellite aiming to reveal the structure of the universe and physics at extreme conditions in space.
本周三，日本发射一颗新一代X射线天文卫星，旨在揭示宇宙结构与太空中极端条件下的物理现象。
Japan on Wednesday launched a new generation X-ray astronomy satellite aiming to reveal the structure of the universe and physics at extreme conditions in space.
本周三，日本发射一颗新一代X射线天文卫星，旨在揭示宇宙结构与太空中极端条件下的物理现象。
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