defence：防御，防卫，保卫；辩护，答辩；(复数)防御工事

词根词缀：de-离开 + -fenc-打击 + -e

• permeate
• permissible
• permission
• permissive
• permit
• permutation
• pernicious
• pernickety
• perorate
• peroration
• peroxide
• perpend
• perpendicular
• perpetrate
• perpetrator
• perpetual
• perpetuate
• perplex
• perquisite
• perry
• per se
• persecute
• persecution
• persecutor
• Perseus