dynamics：动力学，力学；(音乐中的)力度变化，力度强弱法 

词根词缀： -dynam-力 + -ics名词词尾,...学

• respectively
• respiration
• respire
• respirometer
• respite
• resplendent
• respond
• respondent
• response
• responsibility
• responsible
• responsive
• respray
• rest
• restart
• restate
• restaurant
• restaurateur
• restful
• restitute
• restive
• restless
• restock
• restoration
• restore