Russia says it will send a permanent observer to the Organization of the Petroleum Exporting Countries, amid mounting concerns among producers about falling oil prices.
俄罗斯说，它将向石油输出国组织派遣一个常驻观察员。
For permanent sound installations, architectural compatibility of primary importance, mounting points become critical.
对于永久音响设施，首要的建筑兼容性，安装点成为关键。
For permanent sound installations, architectural compatibility of primary importance, mounting points become critical.
对于永久音响设施，首要的建筑兼容性，安装点成为关键。
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