lunar

• The visibility of the lunar formations depends on their illumination by the sun .
  月球结构的可见性取决于太阳对它们的照明。
• Otherwise the daily mean is perturbed appreciably by the lunar constituents .
  否则，日平均值就会明显地受到太阳分潮的干扰。
• They streaked down through the lunar shy at a speed of 3, 700 miles an hour .
  他们以一小时三千七百英里的速度向下掠过月球天空。
• Of special interest is the photographic determination of altitudes of lunar formation .
  最有趣的是用照相来测定月面结构物的高度。
• The lunar highlands are scarred by innumerable craters ranging up to 236 km in diameter .
  在月球的高地上留下无数环形山，有的直径达236千米。
• Without such systems the lunar explorers would still be spinning in simulators on earth .
  如没有此种系统，月球探险者至今仍在地球上的模拟器中旋转。
• Owing to the phenomenon of libration it is possible to observe up to 60% of the total lunar surface .
  由于天平动的现象，我们可能观测到月球总面积的60。
• Solar tides are added to lunar tides to form the unusually high and low spring tides .
  太阳引起的潮汐加到月亮引起的潮汐上，形成涨潮特高落潮特别低的大潮。
• To be sure, the lunar surface has been disturbed in a variety of small-scale ways since it cooled .
  诚然，自从月球表面冷却以来，它受到过各种小规模的干扰。
• Discoveries of genuine changes on the lunar surface are never within the reach of the average amateur observer .
  月面真实变化的发现从来不是一般业余天文学家力所能及的。