electron pair是什么意思？

• PEGGING
• cheese
• 流浪者英文
• prompt
• candy
• banger
• text
• crayon
• theatre
• bombarded
• conflict
• 解决方案英文
• polite
• 长颈鹿英语怎么说
• 参与者英文
• sweater
• 确认英文
• ticket
• 纪念品英语
• firmness
• emergency
• searches
• committing
• fake
• scared
• satisfaction
• searches
• 导师英文
• BARRIE
• saturday

• pear
• amazing
• approaches
• lake
• default
• lesson
• monitor
• 权限英文
• failure
• modernize
• 分配英文
• algiers
• 缺陷英文
• general
• cloud
• various
• 抛弃英文
• fiercely
• 局外人英文
• 造型的英文
• permitted
• erased
• bothering
• begins
• front
• narrow
• mind
• tomato
• silver
• 实施英文

• To darken
• klor
• go beyond the limit
• be in one
• handleless
• kidney calices
• Steady and steady
• dinner services
• Pilatus
• overhead line worker
• a paper of
• gallica
• xddcf
• outside class
• testes
• geusia
• biogenic reef
• coval