nonplus

1. He was nonplus by the strange customs he saw everywhere in the country.
   他在这国各地看到的奇怪习俗，困惑了他。
2. The professor is never at a nonplus, and never perplexed by a problem.
   那位教授从来不会感到困惑，也不会被任何问题所难倒。
3. The Heavy Expense and Nonplus of Township-business Development in Guizhou Province
   贵州省乡镇企业发展的沉重代价及其两难抉择
4. Their nonplus could be attributed to outmoded and backward national theory: National consciousness research falls into confused district is because of the ossification of national definition, and national spirit research is still in the blind area of the discipline of national theory.
   双方的困惑都可以归因于民族理论的薄弱：民族意识研究陷入误区是由于民族定义的僵化，民族精神研究则基本上还处在民族理论学科的盲区。

verb

1. be a mystery or bewildering to
   1. This beats me!
   2. Got me--I don't know the answer!
   3. a vexing problem
   4. This question really stuck me

   Synonym:    perplexvexstickgetpuzzlemystifybafflebeatposebewilderflummoxstupefygravelamazedumbfound