给定一个英文文本，使用自然语言处理技术分析其中的单词频率，并输出出现最频繁的10个单词和它们的频率。


I have a dream that one day this nation will rise up and live out the true meaning of its creed.
Top 10 frequent words: 
1. the 2
2. a 2
3. of 2
4. I 1
5. have 1
6. dream 1
7. that 1
8. one 1
9. day 1
10. this 1