vi.

1. 皱眉；沉下脸，显怒容[（+at）]
   His wife scowled when he came home late again.

   妻子见他回家又是很迟，脸上露出不悦之色。

2. （天气）变阴沉

vt.

1. 皱眉表示；对……沉下脸
   The father scowled his disappointment at his son.

   父亲皱眉对儿子表示失望。

n.[C]

1. 皱眉；怒容；绷着的脸
   I wonder why he is wearing an angry scowl.

   我不知道他为何面带怒容。

2. 阴沉沉的样子

n.

v.