symmetry

n.对称

syllable, syllabub (also sillabub), syllabus, syllogism, syllogistic, sylph, sylphlike, sylvan, symbiosis, symbiotic, symbol, symbolic, symbolically, symbolism, symbolist, symbolize, symbolize, symbolise, symmetric, symmetrical, symmetrically, sympathetic, sympathetically, sympathise, sympathize, sympathize with, sympathize, sympathise, sympathizer, sympathiser, sympathy, symphonic, symphony, symposium, symptom, symptomatic, synagogue, synapse, sync (also synch), synchromesh, synchronization, synchronisation, synchronize, synchronize, synchronise,