elective system是什么意思？

• lake
• ultra
• BARRIE
• text
• general
• reveal
• supper
• lesson
• default
• 旋律的英文
• crayon
• 分配英文
• approaches
• PEGGING
• prompt
• giraffe
• client
• bombarded
• 造型的英文
• begins
• committing
• tourist
• polite
• bothering
• silver
• fiercely
• maths
• 缺陷英文
• various
• firmness

• conflict
• satisfaction
• dragon
• ticket
• searches
• permitted
• candy
• scared
• 局外人英文
• 方案英语
• general
• toxicity
• passage
• cloud
• 呼吁英语
• lycopene
• erased
• 参数英文
• pear
• 实施英文
• 抛弃英文
• 权限英文
• sweater
• amazing
• chess翻译
• searches
• volume
• narrow
• banger
• giraffe

• sleeve pipe
• thuggism
• floribunda
• For the ball handle
• air exhaust
• goat skin
• Prinos
• measure with the eye
• To reveal the rift
• military affairs
• thoracic cavity
• Top sail
• more inefficient
• tansom
• proptryne
• whole tone
• doyly
• spherulitic
• mutator
• Laighton
• Opportunity says
• esculentus
• engraving tool
• stibiated