Earth Day（世界地球日）
Earth Day was first observed in Spring of 1970. An estimated 20 million people nationwide attended festivities out of which came the largest grassroots environmental movement in U.S. history, and the impetus 1 for national legislation like the Clean Air and Clean Water Acts. By the twentieth anniversary of that event, April 22, 1990, more than 200 million people in 141 countries participated in Earth Day celebrations.
Former U.S. Senator Gaylord Nelson, Earth Day's co-founder, modeled Earth Day on anti-Vietnam War demonstrations 3, called "teach-ins," that were common on college campuses. "At a conference in Seattle in September 1969, I announced that in the spring of 1970 there would be a nationwide grassroots demonstration 2 on behalf of the environment," says Nelson. "The response was electric. Telegrams, letters, and telephone inquiries 4 poured in from all across the country." As many as 20 million Americans participated in environmental rallies, demonstrations and other activities in the 1970 Earth Day.
Since the first Earth Day, however, the environmental movement has increasingly transformed itself from a largely grassroots, citizen crusade to a professionally-organized, established special interest.
- This is the primary impetus behind the economic recovery.这是促使经济复苏的主要动力。
- Her speech gave an impetus to my ideas.她的讲话激发了我的思绪。
- His new book is a demonstration of his patriotism.他写的新书是他的爱国精神的证明。
- He gave a demonstration of the new technique then and there.他当场表演了这种新的操作方法。
- Lectures will be interspersed with practical demonstrations. 讲课中将不时插入实际示范。
- The new military government has banned strikes and demonstrations. 新的军人政府禁止罢工和示威活动。