The potential of CRISPR is limited only by our imagination and our ethics.

儿童对活动的需要几乎比食物的需要更为强烈。

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.