Security is always excessive until it's not enough.
大脑适应和重新连接自身的能力是神经科学中最迷人的方面之一。
True change starts with accountability at every level of the organization.
煤炭的未来取决于我们能否使其更清洁、更高效。
引用自海明威《老人与海》,张海迪在演讲中多次引用以表达坚韧精神