synchronous

adj. 同时发生的，同步的

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, syncopate, syncopation, syncope, syndicalism, syndicalist, syndicate, syndication, syndrome, synergic, synod, synonym, synonymous, synopsis, synoptic, syntactic, syntactical, syntactically, syntax, synthesis, synthesize,