At the South Pole, in a region of continuous darkness, humans could access water to produce hydrogen and oxygen.
月球南极是一个持续黑暗的区域，在这里，人类能够接触到水，以生产氢和氧。
Under condition of continuous darkness, cryophase duration, thermoperiodic response threshold and thermoperiodic amplitude play important roles in the determination of diapause in insects.
在全暗条件下，温周期本身通过低温持续期、温周期反应阈值、温周期幅度决定昆虫的滞育发生。
Such sites would have continuous sun for approximately 243 days a year and never have a period of total darkness for more than 24 hours.
这些地点差不多连续243天都将受到太阳的照射，黑夜的总时间不会超过24小时。
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