adj.盲目的；无视力的；不可见的
Sightless, he listened, hunting the booming sounds of the ocean. 他看不见，只能听，寻找着海浪的澎湃声。
His face was like yellow wax, his eyes darkened, as it were sightless. 他的脸色蜡黄，眼睛变得阴暗，茫然无神。
