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法律效力的概念對(duì)于理解法律的本質(zhì)至關(guān)重要。

I think it's important to take risks and to challenge yourself. That's how you grow as a person.

I'm not going to let anyone bring me down.

浪費(fèi)是一種設(shè)計(jì)缺陷，而我們的工作就是修復(fù)它。