on the alert是什么意思？

• committing
• emergency
• candy
• droplets
• failure
• bombarded
• 队长的英文
• profile
• front
• cheese
• 导师英文
• scared
• satisfaction
• giraffe
• maths
• 流浪者英文
• explore
• 缺陷英文
• conflict
• rice
• supper
• fake
• bothering
• repeat
• tourist
• 造型的英文
• 确认英文
• juice
• general
• ultra

• disappointed
• passage
• peeping
• reveal
• narrow
• aspect
• vehicle
• erased
• brat
• client
• predict
• autumn
• tomato
• 旋律的英文
• theatre
• 实施英文
• sweater
• 参与者英文
• 参数英文
• banger
• algiers
• chess翻译
• 来源英语
• 方案英语
• 权限英文
• giraffe
• approaches
• pear
• 局外人英文
• prompt

• preservative
• presidency
• pretension
• prevailing
• primal
• primordial
• pristine
• proceeds
• proclivity
• prod
• prodigy
• professionalism
• profoundly
• progression
• prohibitive
• projecting
• projection
• projectionist
• proliferate
• proliferation
• prominence
• promoter
• pronghorn
• pronounced
• proofread
• propellant
• propensity
• proponent
• proprietor
• proprietorship