相关单词同义词symbol, breath, evidence, mark, motion, subscribe, ink, endorse, 近义词n. mark, symbol, token, gesture, gesticulation v. approve, authorize临近词signal, sigmoid, signe, signa, Signy, Signef, signor, signup, signum, signer, Signus, signee相似词sightsee, sightseeing, sigma, sigmoid, sign (sb) in, sign (sb) out, sign (sth) off, sign for sth, 返回 sign