principal object 的近义词 35 个

• affair
• business
• case
• course
• discussion
• idea
• item
• material
• object
• point
• problem
• proposal
• question
• study
• subject matter
• substance
• theme
• thought
• topic
• argument
• chapter
• class
• core
• gist
• head
• meat
• motif
• motion
• motive
• resolution
• text
• theorem
• thesis
• field of reference
• matter at hand

principal object 的反义词 6 个

• exterior
• exteriority
• fact
• outside
• proof
• master