profusion：大量，丰富，充沛

词根词缀：pro-前 + -fus-熔,注 + -ion名词词尾

• per
• per-
• perambulation
• perambulator
• per annum
• percale
• per capita
• perceive
• percent
• percentage
• percentile
• percept
• perceptible
• perception
• perceptive
• perch
• perchance
• percipient
• percolate
• percolator
• percussion
• percutaneous
• per diem
• perdition
• perdurable