trace back to是什么意思？

• fake
• aspect
• 呼吁英语
• text
• ticket
• bombarded
• 缺陷英文
• rice
• intermission
• 旋律的英文
• firmness
• predict
• explore
• disappointed
• vehicle
• volume
• tomato
• lesson
• failure
• 抛弃英文
• 造型的英文
• 参数英文
• algiers
• 实施英文
• bothering
• neck
• 长颈鹿英语怎么说
• searches
• fiercely
• 解决方案英文

• 方案英语
• brat
• permitted
• committing
• ultra
• tourist
• droplets
• conflict
• banger
• 纪念品英语
• erased
• general
• 确认英文
• 队长的英文
• maths
• toxicity
• approaches
• peeping
• 来源英语
• cloud
• polite
• lycopene
• organizations
• autumn
• repeat
• giraffe
• 局外人英文
• begins
• crayon
• theatre

• devote oneself to
• die break
• digestive system
• draft plan
• drip cup
• drum skin
• duct gland
• earn the name of
• elective system
• electric eel
• electric resistance
• electric trolley
• emission control
• empty of
• in route from to
• end in
• endangered species
• energy content
• enter a race
• entrance requirement
• equilateral triangle
• every item of dress
• every walk of life