These policy analysts believe that the problem is not caused primarily by wage inequity but rather by low wages coupled with single parent hood, regardless of sex.

这些政策分析人士认为，造成这一问题的主要原因并不是工资不平等，而是低工资加上单亲家庭，并且不分性别。

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She is fine with the sex, of course, but unhappy with the prospect of a kiss that, according to the rules of engagement, is just going too far.

NEWYORKER: Shall We Kiss?

There is so much more we need to learn about how to prevent violence, but we could start with the sex difference that is staring us in the face.

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Male prostitutes sell sex to clients who prefer sex with men but may be married to conform to social norms.

ECONOMIST: The struggle against AIDS in Asia is far from over