黑不溜秋 meaning in English

[方言] (形容黑得难看) very black in appearance; swarthy

Presently a dark object was seen in the river, bearing towards us .
不多一会儿，只见河上有个黑不溜秋的玩意儿在向我们漂来。
What a dark funny girl ! i had forgot what i was happy for
（黑不溜秋的傻大姐，忘了乐什么咯！）
Maybe the kettle . it doesn ' t really matter . they ' re both black
也许是"水壶" ，都无关紧要反正都黑不溜秋的，咱俩谁也别说谁
Jack makes my flesh crawl : his cat - like walk , his husky voice , his black clothes , his perpetual grin - - there ' s something really sinister about him
杰克这人让我作呕：走路像个猫儿，说话声音沙哑，服饰黑不溜秋的，成天咧著一张嘴? ?真是有点丧门星的味道。