res·o·nant /ˈrɛzṇənt, ˈrɛznənt/
  (a.)共鳴的,反響的,洪亮的,共振的
  res·o·nant /ˈrɛzṇənt, ˈrɛznənt/ 形容詞
  反響的,叩響的,共振的,共鳴的
  Res·o·nant a.
  1. Returning, or capable of returning, sound; fitted to resound; resounding; echoing back.
     Through every hour of the golden morning, the streets were resonant with female parties of young and old.   --De Quincey.
  2. Elec. Adjusted as to dimensions (as an electric circuit) so that currents or electric surgings are produced by the passage of electric waves of a given frequency.
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  resonant
       adj 1: inducing resonance; "resonant frequency"
       2: characterized by reverberation; "a resonant voice"; "hear
          the rolling thunder" [syn: resonating, resounding, reverberating,
           reverberative, rolling]