An arrow is not empty是什么意思？

• general
• default
• various
• PEGGING
• lesson
• theatre
• permitted
• prompt
• fiercely
• 纪念品英语
• mind
• polite
• vehicle
• 抛弃英文
• tomato
• 造型的英文
• firmness
• dragon
• begins
• algiers
• committing
• intermission
• brat
• erased
• 权限英文
• explore
• searches
• silver
• 缺陷英文
• cheese

• saturday
• sweater
• juice
• organizations
• 呼吁英语
• ticket
• ultra
• amazing
• failure
• aspect
• cloud
• autumn
• 方案英语
• 旋律的英文
• crayon
• giraffe
• front
• banger
• 领域英语
• client
• 分配英文
• predict
• bothering
• 来源英语
• passage
• reveal
• neck
• bombarded
• lycopene
• BARRIE

• beauliful
• dung beetles
• palpebrarum
• Remove water
• step on the gas
• like sixty
• nautical chart
• anthroposophical
• consider carefully
• Expedition team
• preception
• be hit by
• information science
• thyrocalcitonin
• goodstudent
• Look carefully
• Office hours
• completely uninjured
• middle reaches
• foul sewer
• GASkell
• skill ed
• high aspiration
• heart disease
• hooked hair
• lenticular cloud
• semen lini