摘要
One day,bandages could speed healing by zapping wounds with gentle bursts of electricity.They wouldn't even need a b_______(A)pack.A patient's own body movements would power the device.And such a system may not be that far off.Researchers have already produced a working prototype with a smart nanogenerator.The nanogenerator uses body m____(1)to generate electricity,which powers wearable electronics.Then it might be even more useful as medicine.
