罗马帝国为什么垮台?什么是拉丁语办公室自动化?
The history of all hitherto existing society is the history of class struggles.
The future of energy storage lies in the development of new materials and innovative technologies.
The meaning of our existence is not invented by ourselves, but rather detected.
我不会假装在冠状病毒到来之前一切都很完美。
The medium is the metaphor.