And you'd better not cry or you'll have black streaks running down your face.

你也最好别哭，不然你脸上就会有黑道道儿流下来。

youdao

It has yellow and black streaks all over its body and it looks very beautiful.

它全身是黑黄相间的斑纹，看起来非常漂亮。

youdao

She seemed to have fallen asleep; the tear stains and dust on her face had congealed into several black streaks.

她像睡着了，脸上泪渍和灰尘，结成几道黑痕；

youdao

Mr Wright later uploaded a picture to Twitter which showed five or six words on the bottom-right corner of the painting with black streaks of paint running down from the daubed writing.

BBC: Defacing Rothko painting 'not vandalism'

Dad was in his regular clothes, with the faint greasy streaks of black on his neck and behind his ears.

NEWYORKER: Mr. Bones

Gene, who was in his seventies, had the Willingham look, though his black hair had gray streaks and his dark eyes were magnified by glasses.

NEWYORKER: Trial by Fire