You are twenty-one, a grown-up young lady old enough to make up your own mind.
你已经21岁了,已经到了可以自己做主的年龄了。
Who loseth liberty loseth all.
失去自由即失去一切。
A telescope would have to be as far away as the planet Jupiter to look for life in outer space, because the dust becomes thinner the further we travel towards the outer edges of our own solar system.