好奇心推动数学家前进，总是在寻找下一个要回答的问题。

Climate change poses the greatest threat to marine life, and we must act now to mitigate its effects.

"The world is full of obvious things which nobody by any chance ever observes."

The key is to set realistic customer expectations, and then not to just meet them, but to exceed them — preferably in unexpected and helpful ways.

儿童是通过努力从事活动，从而使个人得到发展的。