insertion：插入，夹入；插入物

词根词缀：in-向内 + -sert-加入 + -ion名词词尾

• swathe
• swather
• swatter
• swear
• swearing
• swearing-in
• sweat
• neuralgia
• neurasthenia
• neurectomy
• neuritis
• neurobiology
• neurogenic
• neurolinguistics
• neurological
• neurologist
• neurology
• neuroma
• neuron
• neuropathist
• neuropathology
• neuropathy
• neurophysiology
• neuroscience
• neurosis