sigh

n.叹息 vi.叹气

sidekick, sidelight, sideline, sidelong, sidereal, sideshow, sidestep, sidewalk, sideway, sideway(s), sideways, siding, sidle, siege, sienna, sierra, siesta, sieve, sift, sifter, sight, sight-read, sight-reading, sight-screen (also screen), sighted, sighting, sightless, sights, sightseeing, sightseer, sign, sign in, sign language, sign on, signal, signal-box, signaller (US signaler), signally, signalman, signatory,