And it is also easily obtainable for use as a probiotic from health-food shops.

并且作一种益生菌，很容易在保店中买到。

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，作航天飞船的燃料。