Leadership in times of change requires both vision and the courage to make difficult decisions.

I've been through it all, baby, I'm mother courage.

科学不仅是理性的学科，也是浪漫和激情的学科。

Collaboration between nations is key to solving overfishing in international waters.

Technology should serve the design, not dictate it.

指贫穷的夫妻在生活中处处感到悲哀。