promotor：发起人；倡导者，赞助人

词根词缀：pro-前 + -mot-移动 + -or名词词尾

• loft
• lofty
• log
• loganberry
• logarithm
• logbook
• logger
• loggerheads
• loggia
• logging
• logic
• logical
• logician
• login
• logistic
• logistical
• logistics
• logjam
• logo
• logoff
• logogram
• logos
• logroll
• logrolling
• loin