Well, it's around 750, a great number of the changes that moved the Greeks away from the Dark Age kind of society to the full scale polis begin.

在大约公元前七百五十年,发生了许多变化,这些变化将希腊从黑暗时代的社会形态中拽出,进而开始了全面的城邦社会

耶鲁公开课 - 古希腊历史简介课程节选

There are various estimates about the number of dark pools in the U.S. with many citing about 60.

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If an exchange can't execute an order, it will look at indications of interest from a number of dark pools.

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Her list of credits backs up the claim: She has starred in a number of dark, often violent roles in which she confronts issues of power and control.

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