1. Retardation of development and progression of coronary atherosclerosis: a new indication for calcium antagonists? 迟滞冠状动脉粥样硬化的进展：钙拮抗剂的一个新的指征？
2. This is evidence for a developmental grammatical deficit that cannot be explained as a by-product of retardation or auditory difficulties. 这是一项对生长期语法缺陷的证据，而不能被解释为是一种妨碍或是听力困难的副产品。
3. Sharp name for film compensated Super Twist display which uses a retardation film to correct the color shift in STN displays, and so produces a black and white image. 电影的敏锐的名字报酬要改正的使用一部减速电影的超扭绞的展示颜色在STN移动展示，因此生产一名黑人和白色的图像。
英英解释
n.
1. a decrease in rate of change
2. the extent to which something is delayed or held back
3. any agent that retards or delays or hinders
4. lack of normal development of intellectual capacities
5. the act of slowing down or falling behind
