You can refer to a person's great love for their nation as nationalism. It is often associated with the belief that a particular nation is better than any other nation, and in this case is often used showing disapproval.
This kind of fierce nationalism is a powerful and potentially volatile force.
这种强烈的民族主义情绪是一股强大的可能会突然爆发的力量。
Nationalism is the desire for political independence of people who feel they are historically or culturally a separate group within a country.
The rising tide of Slovak nationalism may also help the party to win representation in parliament.
斯洛伐克民族独立主义浪潮的高涨也有可能帮助该党在议会中赢得席位。