新华社北京2月25日电 （记者冯歆然）2月25日中午，国务院总理李强在北京人民大会堂同来华进行正式访问的德国总理默茨举行会谈。
基于中国暂缓关键矿产出口限制的承诺所形成的贸易“休战”，预计将成为特朗普与习近平3月北京会晤的重要议题之一。
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Reports of African men being attracted to Russia by promises of jobs and ending up on Ukraine’s frontlines have become more frequent in recent months, creating tensions between Moscow and some of the countries involved.
It is not for lack of trying. In some cases, microbiologists have ditched the Petri dish altogether, using microfluidics for manipulating and growing cells. However, these approaches aren’t likely to be adopted at scale as they require less common, less practical, and more expensive devices. So, what about other growth media?
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