insertion：插入，夹入；插入物

词根词缀：in-向内 + -sert-加入 + -ion名词词尾

• neuropathology
• neuropathy
• neurophysiology
• neuroscience
• neurosis
• neurotic
• neurotoxic
• neurotoxin
• neurotransmitter
• neurotropic
• neuter
• neutral
• neutralism
• neutralist
• neutrality
• neutralize
• neutrino
• neutron
• neutron bomb
• neutronics
• never
• nevermore
• never-never land
• nevertheless
• new