The achievements of the past were possible because ordinary Americans demanded them, and meeting today’s environmental challenges will require a new generation to carry on Earth Day’s cause.
Police and education sources said that street crime was one of the most serious issues facing young people because their generation was the first to carry around expensive technology.
警察和教育人士指出，街头犯罪是青少年面临的最严重的问题。因为他们是携带昂贵技术产品的第一代人。
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That means the next generation of power lines could carry up to a quarter more current without adding any more bulky insulation.