无人机的未来在于跨界融合。
多疑的人是不会因此而满足的；他们往往不是因为有了什么理由而嫉妒，只是为了嫉妒而嫉妒，那是一个凭空而来、自生自长的怪物。
The opening up of new markets, foreign or domestic, and the organizational development from the craft shop and factory to such concerns as U.S. Steel illustrate the same process of industrial mutation—if I may use that biological term—that incessantly revolutionizes the economic structure from within, incessantly destroying the old one, incessantly creating a new one.
