pacemaker

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She was fitted with a pacemaker after suffering serious heart trouble.
她患上严重的心脏病后安装了心脏起搏器。
Bradycardia, if persistent, should be controlled by the insertion of a pacemaker as soon as possible.
如果持续出现心动过缓, 应尽快使用起搏器.
Won't i need a pacemaker or a permanent internal defibrillator?
我不需要个心脏起博器或是内部的永久去纤颤器?
She was fitted with a pacemaker after suffering serious heart trouble.
她患上严重的心脏病后安装了心脏起搏器。
Bradycardia, if persistent, should be controlled by the insertion of a pacemaker as soon as possible.
如果持续出现心动过缓, 应尽快使用起搏器.

(RUNNER) the person or animal that establishes the speed in a race, or a person or organization that is an example for others by being successful
(DEVICE) a small device that is put inside someone's chest in order to help the heart beat at the correct speed

A pacemaker is a device that is placed inside someone's body in order to help their heart beat in the right way.
A pacemaker is a competitor in a race whose task is to start the race very quickly in order to help the other runners achieve a very fast time. Pacemakers usually stop before the race is finished.