Of unknown origin是什么意思？

• pear
• begins
• ticket
• autumn
• lake
• silver
• supper
• dragon
• giraffe
• rice
• ultra
• cloud
• amazing
• organizations
• panicked
• general
• lesson
• permitted
• monitor
• 权限英文
• 流浪者英文
• firmness
• 参数英文
• bothering
• default
• banger
• crayon
• 分配英文
• brat
• theatre

• maths
• various
• vehicle
• 队长的英文
• 呼吁英语
• neck
• searches
• narrow
• cheese
• 旋律的英文
• droplets
• reveal
• giraffe
• saturday
• modernize
• polite
• 来源英语
• satisfaction
• mind
• lycopene
• peeping
• searches
• repeat
• fake
• toxicity
• scared
• passage
• tourist
• tomato
• conflict

• ship out
• alveated
• easy and smooth
• a bonnet
• Kirro
• cacao tree
• a patrol party
• Fraudulently sell to
• in perpetuity
• basilar plate
• dion
• neuvaxitis
• ant hill
• testiculus
• paperbound
• a motley variety of
• ferric nucleinate
• honey agent
• biliary calculus
• electric heater
• Freight board
• general income