optical source是什么意思？

• fake
• 呼吁英语
• ticket
• cloud
• giraffe
• fiercely
• 长颈鹿英语怎么说
• droplets
• lycopene
• panicked
• maths
• scared
• committing
• pear
• repeat
• 纪念品英语
• searches
• 确认英文
• profile
• searches
• candy
• dragon
• 队长的英文
• disappointed
• passage
• narrow
• saturday
• bombarded
• 权限英文
• predict

• general
• supper
• mind
• explore
• 流浪者英文
• algiers
• giraffe
• various
• 局外人英文
• 分配英文
• brat
• intermission
• banger
• 缺陷英文
• erased
• passage
• autumn
• crayon
• failure
• text
• 导师英文
• lesson
• permitted
• reveal
• lake
• 造型的英文
• front
• firmness
• rice
• conflict

• refrigerator car
• Small companies
• dining table
• squamella
• all quiet
• series of lectures
• primitive segment
• alme
• blastogenesis
• lacertid
• pile driving
• whirly
• Shapero
• be in the lead
• pannier
• horn silver
• inquiry office
• Schapiro
• go there and back
• layerage
• inhalational