def flatten_list(nested):
    """Flatten a nested list recursively."""
    flat = []
    for item in nested:
        if isinstance(item, list):
            flat.extend(flatten_list(item))
        else:
            flat.append(item)
    return flat

print(flatten_list([1, [2, [3, 4]], 5]))

def flatten_list_recursive(nested_list):
    """
    Recursively flattens a nested list into a single-dimensional list.

    Args:
        nested_list: The list to be flattened, which may contain nested lists.

    Returns:
        A new list containing all elements from the original nested list
        in a flattened, single-dimensional structure.
    """
    flattened = []
    for item in nested_list:
        if isinstance(item, list):
            # If the item is a list, recursively call the function
            # and extend the current flattened list with the result.
            flattened.extend(flatten_list_recursive(item))
        else:
            # If the item is not a list, append it directly.
            flattened.append(item)
    return flattened

# Example Usage:
my_nested_list = [1, [2, 3], [4, [5, 6]], 7, [8]]
flattened_result = flatten_list_recursive(my_nested_list)

print(f"Original nested list: {my_nested_list}")
print(f"Flattened list: {flattened_result}")