sightless

adj unable to see; blind 看不见的; 失明的: a sightless species of bat 一种无视觉的蝙蝠.

sidewalk, sideway, sideway(s), sideways, siding, sidle, siege, sienna, sierra, siesta, sieve, sift, sifter, sigh, sight, sight-read, sight-reading, sight-screen (also screen), sighted, sighting, sights, sightseeing, sightseer, sign, sign in, sign language, sign on, signal, signal-box, signaller (US signaler), signally, signalman, signatory, signature, signature tune (also theme tune), signet, signet ring, significance, significant, significantly,