directly：直接地，径直地；立即，马上

词根词缀：di-分离 + -rect-正,直 + -ly副词词尾

• redistrict
• red meat
• redneck
• redo
• redolent
• redouble
• redoubt
• redoubtable
• redound
• redraft
• redraw
• redress
• red tape
• reduce
• reducer
• reducible
• reductio ad absurdum
• reduction
• reductionism
• reductive
• redundant
• reduplicate
• re-echo
• reed
• reedy