词根词缀：-ility

【来源及含义】Latin: a suffix; meaning, ability, ability to [do something]

【同源单词】ability, agility, arability, cardiomotility, contractility, ductility

词根词缀：tra-, tract-, trac-, -tractive, -traction, -tracting, treat-, trai-

【来源及含义】Latin: drag, draw together; a drawing out or pulling

【同源单词】abstract, abstract, abstracted, abstractedly, abstractedness, abstraction