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- double lens magnifier 双透镜放大镜
- Even the simple trilobite has an eye (complete with its double lens system) that's considered an optical miracle by today's standards. 按照今天的标准，即使是简单的三叶虫，它的眼睛（完美的双镜头系统）也是一个光学奇迹。
- Monitor mode: double lenses omnibearing remote monitor. 力量显示:计算机数位显示监控方式:双镜头全方位远程监控。
- Just as a double convex lens enlarges, so a double concave lens reduces. 正象双凸透镜可以放大那样，双凹透镜也可以缩小。
- a lens magnifying 2, 000 diameters 能放大二千倍的透镜
- Plus lenses can to bringing objects into focus，but also magnify. Plus lenses magnify and minus lenses minify. 正透镜除了可以使光线聚焦以外，还附有使影像放大的作用。正透镜可以放大，负透镜可以缩小。
- He is working double tides to finish his essay. 他日夜苦干，赶写他的文章。
- I do not realize it is a double feature. 我原先不知道这是双片连映。
- Fresnel lens magnifier 菲涅耳放大镜
- Double agents live in a perpetual state of fear. 两面派永远过着提心吊胆的生活。
- I want a double room with a view. 我要一间能看到风景的双人房间。
- He was so fat that he had a double chin. 他胖得有双下巴了。
- The carpet is too thick to double up. 这地毯太厚没法折叠。
- Is the material single width or double width? 这幅料子是单幅的还是双幅的？
- Reserve double room June fourth to tenth inclusive. 预订双人房间，六月四日至十日，共六晚，望订妥复电。
- In this case, I can double for penalty. 假如这样的话，我可以叫加倍了。
- Can you tell me the rate for a double room, please? 请告诉我一间双人房的费用可以吗？
- The soldiers came at the double. 士兵们是急行军来的。
- A couch performs a double service. 躺椅有双重的服务。
- Look, double yellow lines you mustn't park here. 喂，这是双黄线--不能在这儿停车。
