文学是生者与死者的对话。

The most remarkable development of the last quarter of the twentieth century has been the revelation of enormous weaknesses at the core of the world's seemingly strong dictatorships.

Climate change has turned every forester into a climate scientist whether they like it or not.

创新不仅仅是技术，更是找到更好服务客户的方法。

没有严格的执行，认证标准就毫无意义。