1·In this system, called an adaptive optics ophthalmoscope, a laser creates a reference point that is used to correct the blurring of the image obtained with a fundus camera.
在这项称之为自适应光学眼底镜的系统中，一束激光创建了参照点，用以修正眼底摄影机所获图像的模糊现象。
1·Just weeks after the launch of the Hubble space telescope in April 1990, NASA engineers were aghast to discover that a flawed mirror was blurring the relayed images.
就在1990年4月哈勃太空望远镜发射后不久，NASA的工程师们惊讶地发现，其中一块镜片上的瑕疵使得传回来的照片都变得模糊不清。