如何从一个系列中过滤至少包含两个元音的单词？

def filter_words_with_two_vowels(words):
    vowels = ['a', 'e', 'i', 'o', 'u']
    result = []
    
    for word in words:
        vowel_count = 0
        for letter in word:
            if letter.lower() in vowels:
                vowel_count += 1
        if vowel_count >= 2:
            result.append(word)
    
    return result

words = ['apple', 'banana', 'cat', 'dog', 'elephant', 'fish']
filtered_words = filter_words_with_two_vowels(words)
print(filtered_words)

['apple', 'banana', 'elephant']