One ought never to turn one's back on a threatened danger and try to run away from it. If you do that, you will double the danger. But if you meet it promptly and without flinching, you will reduce the danger by half.

我们今天做出的每一个决定都会影响未来海洋的健康。

做出伟大工作的唯一方法就是热爱你所做的事。

估计问题的性质与检验统计假设的问题不同。