burning glass meaning in Chinese

凸透镜，火镜。

Or broken bottles in the furze act as a burning glass in the sun
要么就是荆豆丛中的玻璃瓶碎片在阳光下起到凸透镜的作用。
That s how that wise man what s his name with the burning glass
那是玻璃照的。因此，脑袋爪儿挺灵的某人就利用凸透镜来点火。
The ancient greeks used lenses or concave mirrors to concentrate the sun ' s rays and burning glasses were also used by mexican aztecs and the chinese
古希腊人使用透镜或凹面镜聚集太阳光线并且这种方法也被墨西哥阿芝台克和中国人使用。