loosely的形容词形式是什么意思

例句：

1、She wore her hair loosely knotted on top of her head.

她在头顶上打了个松松的发髻。

2、She fastened the belt loosely around her waist.

她把皮带松松地系在腰上。

3、A curl of black hair fell loosely across his forehead.

他的额头上垂着一绺散开的黑色卷发。

4、 The article is loosely organized.

文章结构松散。