There is no excuse for not trying despite the circumstances you might be facing in your life
Answer: The mast looks like it imprisons the moon, like the British imprison the colonists.
In this passage, the "phantom ship" is described. The text states that the mast and spar of the ship look as if they were imprisoning the moon. Therefore, the author compares this to a "prison-bar." It is possible that this is a reference to the way the British imprison the colonists.
For the present purposes, our interest in the romantic poets is less for
the sake of their own convictions than for ascertaining the nature of
their influence on English society. In their critique of modern society
the Lake poets, in common with so many nineteenth-century critics,
tended to idealize the medieval period. The new industrialism they
believed carried with it a dehumanization, a loss of many values that
the Middle Ages had honored by preserving the religious heritage of
Europe.
The rules of Quidditch is to have the seekers get the golden snitch while chasers get the quaffles through the long golden goal posts.
Beaters whack the bludgers to prevent the seekers or chasers getting knocked off their broomsticks.
Only the seekers are allowed to catch the golden snitch. If the snitch is caught by people other than the seeker it is considered a foul.
Quidditch is the most popular game in the Wizarding World (The world of Harry Potter).