if and only if 当且仅当…时用英语怎么说？

• approaches
• 纪念品英语
• profile
• 导师英文
• 实施英文
• sweater
• PEGGING
• dragon
• saturday
• lycopene
• erased
• 队长的英文
• 权限英文
• firmness
• fake
• toxicity
• searches
• vehicle
• repeat
• bothering
• emergency
• permitted
• banger
• lesson
• committing
• 领域英语
• tourist
• rice
• explore
• BARRIE

• searches
• bombarded
• candy
• 抛弃英文
• intermission
• maths
• general
• cheese
• satisfaction
• failure
• 旋律的英文
• droplets
• 参与者英文
• 造型的英文
• text
• theatre
• 分配英文
• panicked
• 呼吁英语
• ticket
• 确认英文
• prompt
• disappointed
• algiers
• organizations
• volume
• narrow
• begins
• cloud
• 局外人英文

• angiolith
• be a hermit
• more particularly
• Wann
• syndactylia
• Neccidol
• chthonophagia
• Myanmar
• diotic
• Lindafor
• missionize
• current situation
• kerchoo
• resisting power
• revel in
• derivative term
• person in the know
• quaque hora
• bullsucker
• Bad mood
• Baihua fragrance
• table tennis ball
• colleage
• oxycholine
• squat on the heels
• look for
• womanize