经济学人下载:医疗设备:心脏起搏器

1.run out of 用完
They have run out of ideas
他们已经想不出任何办法了。
2.long-lasting 持久的
One of the long-lasting effects of the infection is damage to a valve in the heart
感染的其中一个长期后果是使心脏瓣膜受损。
3.generate electricity 发电
People use coal to heat the house and generate electricity.
人们使用煤炭来给房子取暧和发电。
4.keep a firm grasp on 抓紧
We must keep a firm grasp on our central task.
我们必须牢牢抓住我们的中心工作。