英文：Some computers can perform over a billion computation a second.
中文：有些计算机一秒钟能完成超过十亿次运算。
英文：As a rule of thumb, a one-cent-a-gallon gasoline tax raises$1 billion. Oil producers in President-elect Bush's adopted state of Texas, however, would rather see a tax on imported crude oil.
添加新评论