She has a white and a black dog.

她有一只白狗和一只黑狗.

A black dog ran towards him and snarled.

一只黑狗向他冲过来,冲他吠叫.

I had a black dog. His name was Depression.

我有一条黑狗，它名叫抑郁。

The little girl saw a black dog beside the door.

小女孩看见门边有只黑狗。

There was just enough dawn by this time to show a silhouette. It was a dog. A big dog, a black dog, but a dog.

这时，晨光下我能看出它的轮廓，它是一条狗，一条大狗，一条黑狗，但只是一条狗而已。

His nose and toe pads , which would be black on a black dog, are red - brown.

它的鼻子和脚掌也是红棕色的, 而黑白边则是黑色的.

The stick that hits a black dog can hit a white one too.

打黑狗的棍子也可以揍白狗。

Having a black dog in your life is not so much about feeling a bit down, sad or blue.

生活中有一条黑狗，不仅仅是感到一点低落、悲伤或者忧郁。

But Harry continued to stare at the front cover of the book; it showed a black dog large as a bear, with gleaming eyes.

但是哈利仍然瞪着那本书的封面：封面上有一条狗，差不多有熊那么大，两眼发光。