1. We use the lunar calendar.
    我们采用阴历。

2. The Moon is likely to become the industrial hub of the Solar System, supplying the rocket fuels for its ships, easily obtainable from the lunar rocks in the form of liquid oxygen.
    月球很可能成为太阳系的工业中心。从月球上的岩石中很容易提炼出液态氧，作为航天飞船的燃料。

3. Lunar eclipse occurs when the earth´s shadow falls on the moon.
    地球的影子落在月球上时就发生月蚀。

4. It was a calendar quite similar to the Chinese lunar calendar.
    它和中国的阴历非常相似。