They mock and despise social conventions, class limitations and educational system which has helped to shape them, and determine not to act in the way 'they' might expect them to.

他们嘲笑和蔑视社会的约定俗成、阶级界限以及培养他们的教育体系，坚持自我，不理会来自周围的压力。

youdao

That is,this kind of pull-yourself-up-by-your-bootstraps, that with enough determination and hard work that you can transcend limitations of money or class or gender.

VOA: special.2010.03.08

The Supreme Court heard a case last week that could add new limitations on class actions, potentially adding to a trend that has gained momentum within the judicial body in recent years.

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In practice, this accord would have the effect of imposing new limitations on a whole class of promising anti-missile systems.

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When you find a class that fits your schedule and seems convenient, try to meet with the instructor to tell him or her of any physical limitations you may have, and to discuss how you should prepare for class.

CNN: Yoga: Fitness from the inside out