degree of difficulty是什么意思？

• sweater
• 抛弃英文
• giraffe
• bothering
• 缺陷英文
• silver
• various
• 方案英语
• vehicle
• 确认英文
• algiers
• reveal
• 呼吁英语
• 造型的英文
• fiercely
• scared
• ultra
• permitted
• droplets
• firmness
• juice
• rice
• emergency
• 纪念品英语
• modernize
• tourist
• 参数英文
• monitor
• explore
• autumn

• giraffe
• cheese
• disappointed
• panicked
• cloud
• text
• client
• narrow
• erased
• tomato
• 领域英语
• amazing
• committing
• crayon
• begins
• neck
• pear
• banger
• front
• organizations
• maths
• 分配英文
• 来源英语
• default
• general
• approaches
• satisfaction
• toxicity
• conflict
• 导师英文

• sequel
• commissioning
• Zebre
• goalposts
• modifications
• Derartu
• swum
• cleansers
• swimmer
• Antoine
• Kravis
• waterskiers
• doughnuts
• rep
• paddling
• paler
• soaps
• Dornberg
• slapped
• sweaty
• palms
• permissions
• parachutes
• parachuted
• airmen
• paraded
• Champs
• nakedly
• babysitters
• Southsea