美国总统职位这个独特发明

incompatible - adj. not able to exist together without trouble or conflict : not going together well

sovereign - adj. having independent authority and the right to govern itself

preside - v. to be in charge of something

venue - n. the place where an event takes place

anchor - n. a person or thing that provides strength and support

unique - n. belonging to or connected with only one particular thing, place, or person