质量从来不是偶然的,它始终是智慧努力的结果。
相关系数的可能误差不是一个固定的量,而是取决于样本的大小。
Twenty years of romance make a woman look like a ruin; but twenty years of marriage make her look like a public building.
相信自己和你所拥有的一切。知道你内心有一种力量,比任何障碍都更强大。
The choices women make in their careers are often constrained by societal expectations and institutional barriers.