Part per trillion是什么意思？

• lesson
• bothering
• cloud
• erased
• vehicle
• 造型的英文
• committing
• profile
• 权限英文
• reveal
• intermission
• 长颈鹿英语怎么说
• supper
• 流浪者英文
• droplets
• permitted
• ultra
• brat
• 方案英语
• explore
• fake
• 分配英文
• crayon
• maths
• monitor
• organizations
• saturday
• lycopene
• failure
• 实施英文

• default
• cheese
• 呼吁英语
• panicked
• peeping
• tourist
• 队长的英文
• 参数英文
• begins
• disappointed
• predict
• algiers
• passage
• giraffe
• searches
• theatre
• dragon
• satisfaction
• prompt
• searches
• repeat
• polite
• tomato
• silver
• 纪念品英语
• passage
• autumn
• 缺陷英文
• 解决方案英文
• candy

• Form a pit
• make or become cool
• ruminatively
• bereave of
• secondary axis
• False bone
• dermatotropic
• inferior to others
• cobwebbed
• rotule
• Posting structures
• triangular bream
• muscle bundle
• sugarbeet
• coat with lacquer
• be on the brink of
• componential
• flybrow
• revved
• archinephron
• whowish