1. 自相矛盾；有矛盾特点的情况
    You describe a situation as a paradox when it involves two or more facts or qualities which seem to contradict each other.

    e.g. The paradox is that the region's most dynamic economies have the most primitive financial systems...
           矛盾之处在于这个地区最有活力的经济体却有着最落后的金融体系。
    e.g. The paradox of exercise is that while using a lot of energy it seems to generate more...
           锻炼奇怪的地方在于它会越活动越有劲。

2. 悖论；自相矛盾的说法；似矛盾而（可能）正确的说法
    A paradox is a statement in which it seems that if one part of it is true, the other part of it cannot be true.

    e.g. The story contains many levels of paradox...
           这个故事存在多重悖论。
    e.g. Although I'm so successful I'm really rather a failure. That's a paradox, isn't it?
           虽然我非常成功，可事实上我却是个相当失败的人。这句话自相矛盾，是吧？