Some research groups claim to have found a signature for dark matter - but their results have not been corroborated by others.

一些研究人员称他们已经发现了暗物质的踪迹，但这些研究成果尚未被物理学界的同行证实。

youdao

He was also wearing a fur hat and his signature dark sunglasses.

他还带着一定皮帽和他标志性的黑色太阳镜。

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Taylor's signature bold lip color and dark, made-up eyes further contributed to the effect, she said.

她说，泰勒标志性醒目的唇彩和浓重的眼影加重了这种效果。

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He was also wearing a fur hat and his signature dark sunglasses.

CNN: North Korean leader Kim Jong-Il pictured in public

Giuliani wearing his signature dark suit, white dress shirt, and tie signed autographs, posed for pictures, and even knelt on the sidewalk to be photographed with a dog.

NEWYORKER: Mayberry Man

The paper was penned by a 26-year-old Swiss patent clerk with dark, curly hair years before he sprouted that signature nest of white hair.

NPR: E=mc? at 100