excitable

• 形容人或动物容易激动、兴奋或情绪反应强烈，常因小事就变得非常情绪化。

Describes a person or animal that is easily excited or becomes very emotional quickly.

1. Easily excitedB1informal

   Tending to become enthusiastic, nervous, or agitated quickly, often over minor events.

   易激动的

   • She was so excitable that she jumped up and down when she got the gift.
   • The excitable puppy barked every time someone walked past the door.
   • He is an excitable person who gets worked up over small disagreements.
   • The crowd grew excitable as the band took the stage.

   同义词edgyemotionalhigh-strungimpressionablejumpymercurialnervousskittishtemperamentalvolatile

   反义词calmcomposedimpassivephlegmaticserenestoicstolidunexcitableunflappable

2. Responsive to stimuliC1formalscientific

   Capable of being activated by a physical, chemical, or biological trigger.

   可兴奋的

   • Nerve cells are excitable and can conduct electrical signals.
   • The excitable material glows when exposed to ultraviolet light.
   • Muscle fibers are excitable and contract upon receiving a nerve impulse.
   • Scientists studied the excitable properties of this new polymer.

   同义词reactiveresponsivesensitive