Astronomers who study star clusters have noticed that the speed at which a star of a given mass spins (measured by tracking cool, dark spots on the surface) also seems to vary predictably with age.

研究星团的天文学家已经注意到质量一定的行星(通过追踪表面阴暗冷却斑点来测量)，其旋转速度随着其星龄呈现可预测性的变化。

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No matter your age or mode of transportation, you should be visible, with bright or reflective clothing, plus lights if it's dark out.

不管你年龄抑或交通方式，必须使别人看的到你，穿着亮色或反光衣服，夜间时须配车灯。

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He was middle-age, with a haggard face and a dark red birthmark or scar on his right temple and his black hair was carefully parted and combed in strands.

他是个中年人，面容憔悴，右边太阳穴上有个深红的胎记或伤疤，他那黑色的头发成绺细心地梳理成分头。 他凝神望着道路。

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The isolation of the Greek towns in the Dark Age gives way increasingly to contact with the east and the south, and when I say the south I really mean Egypt and all around the eastern Aegean Sea.

在黑暗时代孤立希腊城镇,开始逐渐增加与东方和南方的接触,当我的南方,实际上指的是埃及,以及所有东爱琴海的周边地区

耶鲁公开课 - 古希腊历史简介课程节选

When farmers later transported this unaged corn whiskey, or moonshine, across the Ohio River for commerce, the spirit would age in its oak barrel containers, becoming infused with dark colour and complex flavour.

BBC: On and off Kentucky��s beaten Bourbon Trail

Many of the silk scrolls have darkened with age and this, combined with the gallery's low lighting and dark-brown walls, creates the feeling that we have stumbled into a hidden cache.

WSJ: Paths Easy and Daunting | Ming Masterpieces | Artful Recluse | Lacma | Asia Society | By Lee Lawrence

Catherine Morris, curator of the Elizabeth A. Sackler Center for Feminist Art, sat on a Brooklyn Museum stage with Ono, age 79, in her iconic black tilted fedora and lowered dark shades.

FORBES: Yoko Ono Honored For Feminist Art, Says Not Saying Anything With Art "A Waste"