如何将列表中的某些数字相乘？例如：

if i >= 3:
    result = [i* 3 for i in list]
if i < 3:
    result = [i * 2 for i in list]
``

我已经尝试了以下功能，但没有成功：

def special_multiply(list, multiplicator,multiplicator_2):
    for i in list:
        if i >= 3:
            result = [i* multiplicator for i in list]
        if i < 3:
            result = [i * multiplicator_2 for i in list]
        return result

print("Special multiply:", special_multiply([1,2,3,4,5,6],2,3))
I expected following output:[2,4,9,12,15,18]

提前感谢！