ex·cit·able /ɪkˈsaɪtəbəl/
  (a.)易興奮的,易怒的
  ex·cit·able /ɪkˈsaɪtəbəl/ 形容詞
  應激的,(可)興奮的
  Ex·cit·a·ble a.  Capable of being excited, or roused into action; susceptible of excitement; easily stirred up, or stimulated.
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  excitable
       adj 1: easily excited [ant: unexcitable]
       2: capable of responding to stimuli [syn: irritable]