您要查找的是不是：
- single focal lense 单焦点透镜
- These vivid kaleidoscopic wheels feature astounding displays of brilliant color and high speed movement all centered around a single focal point. 这些生动的千变万化车轮显示功能惊人的辉煌色彩和高速运动都围绕着一个单一的联络点。
- A single lens in a pair of glasses; a monocle. 单片眼镜一对眼镜片中的一个单透镜；单片眼镜
- (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point. （光学）光学仪器不能使光线集中。
- The letter was written on a single sheet of paper. 这封信只用一张纸写成。
- I have got a single - lens reflex . 我有架单镜头反射式照相机。
- (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point （光学）光学仪器不能使光线集中的缺陷
- I have got a single - lens reflex. 我有架单镜头反射式照相机。
- One single, second class, to winchester, please. 买一张去温撤斯特单程二等票。
- He got over the stream with a single leap. 他一跃就跳过了小溪。
- A single lens in a pair of glasses;a monocle. 单片眼镜一对眼镜片中的一个单透镜;单片眼镜
- The bridge crosses the river in a single span. 河上那座桥是单跨桥。
- Do you want a single or a return ticket? 你要单程票还是往返票?
- Is the material single width or double width? 这幅料子是单幅的还是双幅的？
- I have had to work for every single penny I earned. 我挣的每一便士都是辛苦工作得来的。
- The huntsman fired a single shot at the lion and settled its hash. 猎人朝那只狮子开了一枪，把它打死了。
- Five twenties and ten single, please. 请给我5张20元的和10张1元的。
- She wore a single orchid on her evening dress. 她在晚礼服上缀着一朵兰花。
- Up to yesterday, I thought he was single. 直到昨天，我一直以为他是独身。
- Can you let me have a room with two single bed? 可以给我一间两张单人床的房间吗？
