------
## 最终结论
```python
def find_Max_Len_Even(s):
    words = s.split()
    max_even_word = "-1"
    
    for word in words:
        if len(word) % 2 == 0:
            if len(word) > len(max_even_word):
                max_even_word = word
    
    return max_even_word

# Test cases
assert find_Max_Len_Even("python language") == "language"
assert find_Max_Len_Even("maximum even length") == "length"
assert find_Max_Len_Even("eve") == "-1"
```