The stethoscope-invented by a french doctor , rene laennec , who was embarrassed by putting his ear to his patient 's bosom-meant that respiration and heart sounds could be listened for more accurately .

法国医生雷奈克对于把耳朵放到病人胸部感到尴尬，因而发明了听诊器，这意味着能更精确地听到呼吸和心跳。