他长得黑不溜秋的。

He is dark and swarthy.

薄薄的电话薄让油污的手指翻得黑不溜秋。

The thin phone book was grimy from being thumbed by filling station hands.

他们只不过有点黑不溜秋。

They're a little dark-skinned, maybe.

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。

Presently a dark object was seen in the river, drifting towards us.

祝你的打扮让人毛骨悚然，祝你的猫黑不溜秋，祝糖果塞满你的口袋！

May your costume be scary, your cat be black, and buckets of candy fill your sack!

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，成天咧着一张嘴&真是有点丧门星的味道。

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.