它可以有效调控自然光线的强度，降低室温，节约空调能耗。
It can effectively control the intensity of natural light, reducing room temperature, energy saving air-conditioning.
这种可以附着在任何材料上的细菌电池能在室温下甚至在水里正常工作。与目前使用的锂离子电池相比，它们的危害性更低，因为发热少从而降低了着火的可能性。
He said that the bacteria should be less dangerous than those used in current lithium-ion batteries because they produce less heat, which reduces the chance of them catching fire.
安装一个室内温控器可以节省12%的电费，在天花板上安装吊扇可以降低几度室温，甚至使用节能灯泡都有助于显着减少电费。
A ceiling fan can lower a room's temperature by several degrees. Even something as simple as switching to compact fluorescent light bulbs can make a big difference in electricity bills.
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