Occasional spraying or adding of water will keep it moist. With the sphagnum mixed in, a far longer period can pass without having to re-moisten the substrate.

偶尔喷洒或加点水可以保持湿度，因为有泥碳藓混在其中，可以使基质经过较长时间而不需要给它保湿。

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The businesses' ability to pass along higher prices to their customers was mixed, according to the Federal Reserve's new snapshot of nationwide economic conditions released Wednesday.

据美联储委员会周三发表的全国经济状况最新快报称，商业力图将提价转嫁给顾客也是好坏参半。

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Describes how to pass classes by value, how to pass various structures, and how to pass unions with value and mixed types.

描述如何通过值传递类，如何传递各种结构以及如何传递具有值和混合类型的联合。

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Ventilation can involve either 100 percent fresh air in which outside air enters and leaves the cabin in a single pass or a system in which various fractions of air are recirculated from the aircraft cabin and mixed with fresh air.

CNN: Commentary: Flu and your health on a plane