The pipe is hollow是什么意思？

• 抛弃英文
• general
• fake
• crayon
• PEGGING
• aspect
• cheese
• candy
• explore
• theatre
• fiercely
• polite
• 分配英文
• front
• 参数英文
• 纪念品英语
• various
• 领域英语
• searches
• lycopene
• vehicle
• 导师英文
• toxicity
• begins
• supper
• maths
• scared
• repeat
• panicked
• narrow

• volume
• committing
• reveal
• passage
• bothering
• silver
• modernize
• 方案英语
• monitor
• 造型的英文
• satisfaction
• predict
• 来源英语
• 缺陷英文
• permitted
• searches
• failure
• 局外人英文
• general
• giraffe
• brat
• BARRIE
• peeping
• pear
• giraffe
• organizations
• 队长的英文
• mind
• saturday
• autumn

• antijam
• reflectometry
• in the least
• circulating current
• dinitrile
• checse
• thearchy
• The Starfish
• rhomboic
• homewotk
• oxoacetic
• whitewing
• The corner of
• cotton to
• Trasa
• outturn
• Open Economic Zone
• isometric line
• blood red
• best of all
• beri
• legger
• angle column
• Antilocapra