intractable problem是什么意思？

• giraffe
• 参与者英文
• crayon
• committing
• searches
• repeat
• searches
• theatre
• 抛弃英文
• 确认英文
• chess翻译
• begins
• tourist
• 呼吁英语
• aspect
• 局外人英文
• failure
• mind
• 旋律的英文
• fake
• pear
• firmness
• cloud
• 解决方案英文
• PEGGING
• rice
• client
• neck
• various
• front

• cheese
• bombarded
• panicked
• disappointed
• peeping
• saturday
• passage
• autumn
• amazing
• 实施英文
• volume
• lesson
• tomato
• reveal
• 参数英文
• predict
• general
• intermission
• bothering
• text
• modernize
• emergency
• 权限英文
• scared
• vehicle
• 队长的英文
• lycopene
• lake
• general
• algiers

• wrote
• acolytes
• removed
• signals
• efforts
• strengths
• weaknesses
• acquaintances
• becomes
• Tweed
• personally
• permitted
• leaders
• seemed
• acquiesced
• Deirdre
• Motors
• Saab
• violinist
• beans
• acquirers
• takeovers
• recycling
• mergers
• acquisitions
• firms
• magistrates
• officers
• acres
• sown