unavoidable set of configurations造句

• Finally, it remains to identify an unavoidable set of configurations amenable to reduction by this procedure.
• The argument above began by giving an unavoidable set of five configurations ( a single vertex with degree 1, a single vertex with degree 2, . . ., a single vertex with degree 5 ) and then proceeded to show that the first 4 are reducible; to exhibit an unavoidable set of configurations where every configuration in the set is reducible would prove the theorem.