Unable to understand是什么意思？

• lesson
• committing
• monitor
• 旋律的英文
• bothering
• satisfaction
• failure
• dragon
• organizations
• 参与者英文
• 纪念品英语
• tomato
• approaches
• PAXLOVID怎么读
• lycopene
• 方案英语
• reveal
• panicked
• crayon
• scared
• 来源英语
• 领域英语
• bombarded
• volume
• begins
• 缺陷英文
• algiers
• 局外人英文
• front
• fake

• conflict
• giraffe
• erased
• banger
• amazing
• general
• various
• PEGGING
• neck
• aspect
• 流浪者英文
• theatre
• supper
• 队长的英文
• fiercely
• pear
• 解决方案英文
• ticket
• BARRIE
• 实施英文
• permitted
• 抛弃英文
• giraffe
• profile
• sweater
• cheese
• cloud
• 长颈鹿英语怎么说
• maths
• vehicle

• george Stephenson
• traffic jam
• beaten track
• dive into
• set out to do
• Morse code
• tetrahedron
• James Dyson
• ring back
• George Bernard
• Pickering
• dismissively
• in amazement
• in need of
• fade out
• scraper
• hula hooping
• pogo stick jumping
• jumping jack
• somersaulting
• Ashrita Furman
• Sri Chinmoy
• repentance
• triathlon
• triathlete
• the Danube River
• the Parana River