Concave mirrors direct the sun to a middle tube to heat an oil solution.

凹面镜将阳光引导到中管，对油溶液进行加热。

A narrow source of light is bounced off a concave mirror towards a camera, with a thin metal blade blocking some of the focused light.

窄光源从凹面镜反射到照相，刀片阻挡部分聚焦光。

As the sun burned down over Olympia, the actress play a high priestess .Use the sun's rays and a parabolic mirror to light the torch.

当太阳照耀古奥林匹亚，演员扮演最司，利用太阳光和凹面镜点燃圣火。

Four concave mirrors were hung within it, and there was an altar of white marble, surrounded by a chain of magnetic iron.

里面挂着四面凹面镜， 还有一个白色大理石的坛， 周围环绕着一条磁铁链。

Then he placed heating lamps on one side of the paper and concave mirrors on the other, with the mirrors directed toward the area.

然后，他在纸张的一侧放置加热灯，在另一侧放置凹面镜，镜子对准该区域。