记念他向以色列家所发的慈爱，所凭的信实。地的四极，都看见我们神的救恩。
He has remembered his love and his faithfulness to the house of Israel; all the ends of the earth have seen the salvation of our God.
如果我们感到内心有什么东西将我们向两极拉扯，哲学能向我们提供怎样的启示？
If we feel something within ourselves drawing us in one direction but also something drawing us the other way, what exactly can philosophy do to offer us illumination?
可以操作声子并只让它们向一个方向流动的设备正在被建造，这是二极管的热等价物。
Far from it. Devices are being built that can manipulate phonons, allowing them to flow in one direction only, for example - the thermal equivalent of a diode.
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