如果美国通过有的放矢的公共政策实现这些重大步骤 — — 这也是奥巴马的规划 — — 那么由此产生的创新科学、新技术和强大的示范效应将会让全世界所有国家受益。
If America realizes these bold steps through purposeful public policies, as Obama outlined, the innovative science, new technology, and powerful demonstration effects that result will benefit countries around the world.