Every time she hung out with her single female friends, the same gripes surfaced.

每一次她与她的单身女友出去，同样的牢骚一再出现。

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The image of a young, slim, single female was due in part to the airlines' marketing, but also to their hiring practices.

一个年轻的、苗条的单身女性是航空公司营销的一部份，也是雇佣的内容。

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Research by an international team of scientists has found that all polar bears descend from a single female brown bear.

由国际科学家组成的一支研究小组发现，所有北极熊都是一种雌性棕熊的后代。

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It shows more than half of the female victims were orphans or came from single-parent families.

VOA: standard.2009.10.04

But she points out that there is still not a single female president, chairman or chief executive of a big Wall Street firm.

ECONOMIST: Wall Street

Over the course of a six-month bootcamp, women learn the fundraising process and ultimately invest as a group in a single female-led for-profit social venture.

FORBES: Tipping The Scales: Women Angel Investing Reaches All-Time High

In a July campaign ad, GOP nominee Mitt Romney singled out Obama for easing the rules for welfare, a program that serves mainly single female heads of households.

FORBES: Romney Can't Support Single Moms