月食

• Some changes happen only once in a while , like an eclipse of the moon
  一些变化只有某个时候才会发生，比如月食。
• Jake leave before the eclipse . -
  月食之前出发
• He had studied one of his books , and he knew the date of the next eclipse
  他已研究过一本书，知道了下次月食的时间。
• There is a story about christopher columbus and an eclipse of the moon
  还有一个关于克里斯托弗?哥伦布和月食的故事。
• Astronomers can calculate when there will be eclipses of the sun and the moon
  天文学家能计算出何时会发生日食、月食
• Astronomers can calculate when there will be eclipses of the sun and the moon
  天文学家能推算出发生日食、月食的时间。
• Astronomers2 know the dates of eclipses and they are not afraid
  天文学家能预知日食和月食的日期，所以他们没有恐惧心理。
• What is " lunar eclipse "
  甚么是月食？
• Did you realize that the word month is derived from the moon ' s 29 . 5 day period
  每年月食最多发生3次，有时一次也不发生。
• Please refer to the attached diagram for the path of the moon during the eclipse
  有关是次月食时月球的路径，请参考附图。