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。
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。
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。
Perhaps it had something to do with living in a dark cupboard, but Harry had always been small and skinny for his age.
也许和哈利长年住在黑洞洞的碗柜里有些关系，他显得比他的同龄人瘦小。
He is a man of from fifty to fifty-two years of age, dark, with black eyes covered with shaggy eyebrows, and a thick mustache.
他是一个年约五十一二岁的人，棕褐色皮肤，蓬松的眉毛底下有一双黑色的眼睛，胡子又长又密。
He is a man of from fifty to fifty-two years of age, dark, with black eyes covered with shaggy eyebrows, and a thick mustache.
他是一个年约五十一二岁的人，棕褐色皮肤，蓬松的眉毛底下有一双黑色的眼睛，胡子又长又密。
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