名词
中文翻译：Unknown
同义词：
['double-concave', 'double-curved', 'double-curved surface例句：1. The double-convex lens focuses light in a precisepattern.（双凸透镜以精确的模式聚焦光线。）']
例句：
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1. The double-convex lens focuses light in a precisepattern.
双凸透镜以精确的模式聚焦光线。
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2. The double-convex design ofthe car's hood is bothfunctional and stylish.
汽车前脸的双凸设计既实用又时尚。
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3. The double-convex mirror reflects light in away that enhances the viewer's perspective.
双凸镜以某种方式反射光线，增强了观察者的视角。