Nature staff discuss some of the week’s top science news.
本报北京2月27日电 （记者王浩、邓剑洋）今年以来，水利部指导督促各地抢抓河湖枯水期、施工影响小的窗口期，不断推动国家水网联网、补网、强链。
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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.，详情可参考爱思助手下载最新版本