sing in unison是什么意思？

• 权限英文
• lake
• toxicity
• 来源英语
• modernize
• firmness
• aspect
• mind
• searches
• tomato
• 确认英文
• explore
• scared
• sweater
• default
• lesson
• ultra
• 造型的英文
• volume
• vehicle
• 领域英语
• maths
• various
• emergency
• brat
• repeat
• searches
• 纪念品英语
• 解决方案英文
• predict

• general
• dragon
• algiers
• general
• banger
• ticket
• amazing
• permitted
• begins
• text
• autumn
• giraffe
• 参与者英文
• disappointed
• tourist
• droplets
• monitor
• 导师英文
• organizations
• polite
• narrow
• 分配英文
• 局外人英文
• 流浪者英文
• saturday
• neck
• 方案英语
• 实施英文
• PEGGING
• passage

• undercuts
• undercutting
• underdogs
• underplaying
• underplays
• underrating
• underrates
• understating
• understatements
• understudies
• understudied
• understudying
• unfastening
• unfastens
• unifications
• unleashes
• unsettles
• upbraids
• upstaging
• upstarts
• upsurges
• upsurged
• upsurging
• upswings
• upswung
• upswinging
• usurped
• usurping
• usurps
• vacillated