Natural gray diamonds occur within a specific region of colour tone.

天然灰色钻石发生在一个特定的地区色彩基调。

youdao

The natural color of Mimas visible to the human eye may be a uniform gray or yellow color, but this mosaic has been contrast-enhanced and shows differences at other wavelengths of light.

人眼所见土卫一的自然颜色可能是均匀的灰色或黄色，但这张拼接图经过了增强对比度，以显示其他波长的光的差异。

youdao

The original world must be diverse with white, black and also gray colors, which should be natural, balanced and merged.

世界的本质一定是丰富多彩的，有白，有黑，也有灰的；应该是自然的，平衡的，融合的。

youdao

A blue-gray haze from natural and now manmade sources hangs over them like smoke.

VOA: special.2009.09.28

Acquisitions include French media conglomerate Vivendi Universal, which GE folded into its NBC Universal unit, along with diagnostic imaging company Amersham and natural gas systems supplier Vector Gray.

FORBES: GE, At Your Service

Liz returns to the living room with Fran, whose gray streak, she learns, is natural and who works at home during school hours, copy editing and proofreading documents for a legal firm.

NEWYORKER: Playdate

African-American women with natural hairstyles, men with dreadlocks and Baby Boomers with gray hair are not the only ones leaving job interviews questioning whether their hair just cost them a job.

FORBES: Is Your 'Natural' Hairstyle Preventing You from Getting a Job?