Science & Environment
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The German firm supplies about three-quarters of the bone cement needed in the NHS. The product is used in more than 1,000 operations a week, mostly in knee replacements, but also in some hip and shoulder replacements.，详情可参考Line官方版本下载
And in the latest stand-off, the Taliban government used drones to strike targets in Pakistan. Drones, which are cheap, small and easy to use, will undoubtedly alter the nature of this conflict like they have changed battlefields around the world.，详情可参考WPS官方版本下载
Варвара Кошечкина (редактор отдела оперативной информации)