significant

a.有意义的，意味深长的；重要的，重大的

sighting, sightless, 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, significantly, signification, signify, signor, signpost, Sikh, silage, silence, silencer, silent, silent film, silently, silhouette, silica, silicate, silicon, silicon chip, silicone, silicosis, silk,