VOA常速英语2008年-Helping Environment Good for Business

By Ernest Leong
Washington
15 April 2008
 

The push to become more environmentally friendly is gaining momentum¹ in the Washington area.  The first all-hybrid taxicab fleet in the U.S. recently opened for business just outside the nation's capital.  VOA's Ernest Leong reports business for Envirocab is great - which is good news for their bottom line and the environment.

1 momentum   

n.动力，冲力，势头；动量

参考例句：

• We exploit the energy and momentum conservation laws in this way.我们就是这样利用能量和动量守恒定律的。
• The law of momentum conservation could supplant Newton's third law.动量守恒定律可以取代牛顿第三定律。