pacemakerKK [ˋpeˏsmekɚ] /ˈpeɪˌsmeɪkɚ/发音名词1心律调节器、心脏节律器医学The doctor fitted her with a pacemaker to steady her heartbeat.医生为她装了心律调节器,以稳定心跳。2领跑者、带头者The pacemaker dropped out after leading for two laps.那名领跑者带头跑了两圈后就退出了。3领导者、标竿The company has long been a pacemaker in green technology.这家公司长久以来都是绿色科技的领导者。4节律点、窦房结医学The heart's natural pacemaker sends out regular electrical signals.心脏的天然节律点会发出规律的电讯号。用这个字练口说→