In the past few years, scientists have determined that this transparency—critical for focusing light—stems in large part from the unique ability of the lens to activate a self-destruct program in its cells that aborts just before completion, leaving empty
In the past few years, scientists have determined that this transparency—critical for focusing light—stems in large part from the unique ability of the lens to activate a self-destruct program in its cells that aborts just before completion, leaving empty
过去几年，专家已确知聚光所必需的透明度，大部份源于水晶体细胞的独特能力，它们可在发育即将完成时启动自我摧毁程式，变成中空但能续存的细胞，好让可见光通过。