如何从字符串和同义词列表中查找所有单词组合

def find_word_combinations(string, synonyms):
    words = string.split()  # 拆分字符串为单词列表
    synonym_dict = {}
    
    # 构建同义词字典
    for synonym in synonyms:
        word, synonyms = synonym.split(" ", 1)
        if word in synonym_dict:
            synonym_dict[word].extend(synonyms.split())
        else:
            synonym_dict[word] = synonyms.split()
    
    # 生成所有单词组合
    def generate_combinations(index, current_combination, combinations):
        if index == len(words):
            combinations.append(" ".join(current_combination))
            return
        
        word = words[index]
        if word in synonym_dict:
            for synonym in synonym_dict[word]:
                generate_combinations(index + 1, current_combination + [synonym], combinations)
        
        generate_combinations(index + 1, current_combination + [word], combinations)
    
    all_combinations = []
    generate_combinations(0, [], all_combinations)
    return all_combinations

# 示例用法
string = "I am happy"
synonyms = ["happy joyful", "am are"]
result = find_word_combinations(string, synonyms)
print(result)