precision：精确(性)，精密(度)

词根词缀：pre-前 + -cis-切 + -ion名词词尾

• hear
• hearing dog
• hearken
• hearsay
• hearse
• heart
• heartache
• heartbeat
• heartburn
• hearten
• heartfelt
• hearth
• hearthrug
• heartland
• heart-rending
• heart-searching
• heart-stopping
• heartstrings
• heart-throb
• hearty
• heat
• heath
• heathen
• heather
• heathland