the root of the trouble是什么意思？

• pear
• 权限英文
• dragon
• prompt
• various
• 流浪者英文
• autumn
• front
• theatre
• juice
• rice
• candy
• vehicle
• failure
• 局外人英文
• 参与者英文
• 方案英语
• scared
• giraffe
• organizations
• brat
• amazing
• 分配英文
• passage
• default
• crayon
• 造型的英文
• 导师英文
• narrow
• lake

• erased
• permitted
• repeat
• peeping
• tourist
• committing
• 领域英语
• PEGGING
• intermission
• disappointed
• 实施英文
• bothering
• conflict
• BARRIE
• droplets
• emergency
• 抛弃英文
• mind
• firmness
• lesson
• searches
• begins
• cloud
• satisfaction
• 缺陷英文
• passage
• maths
• volume
• 队长的英文
• profile

• There is no end
• wavelets
• time sequence
• Abstract Array
• Official approval
• dimeric polymer
• Notechis
• femoris
• Chinese draughts
• about equal
• Kanaros
• lightning arrester
• Communist Party
• Asaresult
• sursery
• Be hatched
• clever device
• osphradium
• konck out
• Do not show
• Pei Zhen