? n. 听诊器
stetho-胸 stetharteritis -scope检查或观察用的镜 thoraco-胸（腔）
? n. heart muscle
myo- 肌 myoatrophy myoasthenia
? n. 领跑者； 带头人； 标兵； 起搏器 pace
keep pace with 长难句
pace back and forth
Federally funded training and free back-to-school programs for laid-off workers are under way, but few experts believe they will be able to keep up with the pace of the new technology.
? n. 心率失常，心率不齐 -ia [医]〔词尾〕情况，状况;病症 myasthenia leukemia insomnia
? vt. 开始，发起； 传授； 创始，开辟 长难句 Despite a spell of initial optimism in the 1960s and 1970s when it appeared that transistor circuits and microprocessors might be able to copy the action of the human brain by the year 2010, researchers lately have begun to extend that forecast by decades if not centuries.