估计问题的性质与检验统计假设的问题不同。

小说就像蜘蛛网，或许连接得很轻，但仍然在四个角落都与生活相连。

"The fundamental fact about all of us is that we're alive for a while but will die before long. This fact is the real root cause of all our anger and pain."

Corporate social responsibility is not a burden, but an inherent requirement for sustainable development.