flatus：肠胃胀气，屁，阵风，气息，一阵风   

词根词缀： -flat-吹 + -us名词词尾

• symptomatic
• sym-,syn-
• syn-
• synagogue
• synapse
• synchronise
• synchronization
• synchronize
• synchronous
• syncline
• syncopate
• syncope
• syncretism
• syndicalism
• syndicalist
• syndicate
• syndrome
• synecdoche
• synergic
• synergism
• synergy
• synesthesia
• synod
• synonym
• synonymous