阿富汗是我过去的一部分，是我欢笑与哭泣的土地，但它已不再是家。
Afghanistan is the land of my past, the place where I had laughed and cried, but it was no longer my home.
The metropolis has always been the seat of the money economy.
创新不仅仅是创造新药，更是将药物送到最需要的人手中。
教师必须为形成较好人类而献出一切。