helical structure是什么意思？

• emergency
• general
• peeping
• ticket
• neck
• toxicity
• explore
• theatre
• candy
• firmness
• begins
• scared
• conflict
• 参数英文
• client
• 权限英文
• various
• organizations
• tomato
• crayon
• 纪念品英语
• 造型的英文
• default
• algiers
• predict
• 领域英语
• 解决方案英文
• giraffe
• lycopene
• passage

• PEGGING
• disappointed
• lesson
• repeat
• silver
• sweater
• fake
• panicked
• aspect
• droplets
• brat
• monitor
• modernize
• juice
• narrow
• polite
• front
• failure
• cheese
• chess翻译
• 旋律的英文
• bombarded
• saturday
• 来源英语
• text
• general
• 方案英语
• mind
• BARRIE
• 分配英文

• impost
• imposter
• impostor
• imposture
• impot
• impotence
• impotency
• impotent
• impotentia
• impotently
• impound
• impoundage
• impoundment
• impoverish
• impoverishment
• impower
• impracticability
• impracticable
• impracticably
• impractical
• imprecate
• imprecation
• imprecatory
• imprecise
• imprecisely
• imprecision
• impreg
• impregnability
• impregnable
• impregnant