托福阅读真题Official 44 Passage 2（四） The Use of the Camera Obscura. The precursor of the modern camera,the camera obscura is a darkened enclosure into which light is admitted through a lens in a small ...

托福阅读真题Official 44 Passage 2（三） The Use of the Camera Obscura. The precursor of the modern camera,the camera obscura is a darkened enclosure into which light is admitted through a lens in a small ...