用户需求是产品开发的出发点，也是落脚点。

Collaboration between governments, businesses and society is essential to tackle climate change.

建筑的本质是光在形式上的游戏。

The charm of study consists chiefly in the satisfaction which the mind experiences in acquiring knowledge.

The writer's duty is to tell the truth, even when it is uncomfortable.

屋顶上的天空，如此蔚蓝，如此宁静！