| 1. | His figure looks very funny in the concave mirror
他的样子在凹镜里显得非常可笑。 |
| 2. | The vase is actually made of two parabolic concave mirrors
花瓶其实是由两个抛物面凹镜组成。 |
| 3. | The vase is actually made of two parabolic concave mirrors
花瓶其实是由两个抛物面凹镜组成。 |
| 4. | The size of images formed by concave mirrors depends on how far the objects are located from the mirror foci
利用凹镜所看到的镜像，则会随物体与镜面焦点的距离而变化。 |
| 5. | Mirror is used instead . catadioptric telescopes use both a lens , called correcting plate , and a mirror
顾名思义，折反射式则在入口处有一块称为修正镜的透镜及在底部有一块凹镜。 |
| 6. | The mirrors used in this exhibit are designed in such a way that the focus of one is right on the surface of the other
展品所用的凹镜是经过特别剪裁，令每一面镜的焦点都刚好位于另一面镜的镜面。 |
| 7. | The mirrors used in this exhibit are designed in such a way that the focus of one is right on the surface of the other
展品所用的凹镜是经过特别剪裁，令每一面镜的焦点都刚好位于另一面镜的镜面。 |
| 8. | A parabolic concave mirror can converge parallel light rays to its focus , and also collimate light rays that pass through its focus
抛物面凹镜会把平行而来的光线聚集在一点焦点，亦会把源自焦点的光线平行向外反射。 |
| 9. | A parabolic concave mirror can converge parallel light rays to its focus , and also collimate light rays that pass through its focus
抛物面凹镜会把平行而来的光线聚集在一点(焦点) ，亦会把源自焦点的光线平行向外反射。 |
