pivot：中心，枢轴，核心

来自古法语pivot,绞链，门合页。引申词义中心，枢轴，核心等。

• pre-exist
• prefabricate
• preface
• prefatory
• prefect
• prefecture
• prefer
• preferable
• preference
• preferential
• preferment
• prefigurative
• prefigure
• prefix
• pregger
• pregnable
• pregnant
• preheat
• prehensile
• prehistory
• preignition
• pre-install
• prejudge
• prejudice
• prejudiced