大气中不断上升的二氧化碳含量对珊瑚有双重作用。
Increasing carbon dioxide in the atmosphere has a double effect on coral.
该材料内嵌入小多孔硅球体，有双重作用。
The material also has small spheres of porous silicon embedded in it. Their function is twofold.
该材料内嵌入小多孔硅球体，有双重作用。
The material also has small spheres of porous silicon embedded in it.
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