基本信息
speed (sth.) up 加速；加快 1). 汽车一到高速公路就加速。cars speed up once they reach the highway. 2) 他们加快了生产速度。they have speeded up production. 知识链接: with all speed 以全速，开足马力 at high/low speed 以高速/低速 at a speed of 以……速度活学活用：many countries are faced with the problem about how to economic development. a. turn up b. speed up c .get up d. stay up 2.instant 【课文原句】 instant 1)n.瞬间；片刻他停了一会儿。 he paused for an instant. 2) adj. 立即的；立刻的服用一药剂后我立刻感到轻松。i felt instant relief after taking a doze of medicine.
