on the sly是什么意思？

• fiercely
• 缺陷英文
• erased
• polite
• organizations
• repeat
• sweater
• giraffe
• panicked
• giraffe
• 参与者英文
• maths
• approaches
• 参数英文
• bombarded
• ultra
• reveal
• scared
• lesson
• intermission
• various
• firmness
• disappointed
• neck
• tomato
• volume
• silver
• algiers
• emergency
• searches

• front
• conflict
• 权限英文
• candy
• rice
• lake
• permitted
• 实施英文
• mind
• cloud
• profile
• supper
• client
• committing
• fake
• general
• cheese
• prompt
• satisfaction
• vehicle
• dragon
• monitor
• 旋律的英文
• default
• juice
• 造型的英文
• 抛弃英文
• lycopene
• toxicity
• 分配英文

• twinges
• umpired
• unbent
• Ashley
• Kanpur
• underlings
• underplayed
• underrated
• understates
• unfastened
• rapturous
• unleashed
• Tampering
• unimpressed
• upbraided
• upbraiding
• upstaged
• upstages
• urchins
• vacillates
• vagaries
• perplexing
• vandalized
• vegetating
• Trimmer
• veneers
• reproduced
• revelled
• MGM
• invents