spirograph
  呼吸運動記錄器
  spi·ro·graph /ˈspaɪrəˌgræf/ 名詞
  Spi·ro·graph n.  Physiol. An instrument for recording the respiratory movements, as the sphygmograph does those of the pulse.
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  spirograph
       n : a measuring instrument for recording the depth and rapidity
           of breathing movements