trace to its source是什么意思？

• default
• committing
• searches
• organizations
• banger
• supper
• front
• mind
• cheese
• general
• 呼吁英语
• fake
• algiers
• various
• conflict
• lake
• pear
• 局外人英文
• crayon
• modernize
• tourist
• predict
• 权限英文
• firmness
• permitted
• 缺陷英文
• monitor
• narrow
• BARRIE
• explore

• rice
• 抛弃英文
• failure
• polite
• peeping
• panicked
• autumn
• 参与者英文
• client
• disappointed
• bothering
• intermission
• chess翻译
• repeat
• tomato
• prompt
• text
• maths
• 导师英文
• toxicity
• 纪念品英语
• theatre
• 流浪者英文
• 来源英语
• neck
• saturday
• begins
• ticket
• 确认英文
• vehicle

• culpability
• orthodoxy
• ectotoxin
• exogenous toxin
• kelis
• cheloma
• Laminaria japonica
• giant kelp
• bull kelp
• more nervous
• most nervous
• imported goods
• foreign goods
• sapiens
• contradistinctive
• unamiable
• unaccommodating
• uncongenial
• mismatched
• unsuited
• secondment
• wedding feast