If you use a set of fully charged AA size batteries to provide voltage and current they last only a few hours.
如果您使用的是一组全充的AA电池来提供电压和电流，那么它们只能支撑几个小时。
2
For another, the actual passage of the ions (which are electrically charged atoms) creates the current, so no turbine is required.
其二，不需要涡轮机，因为离子(带电荷的原子)实际运行的通道就能产生电流。
3
Six current and former police officers in New Orleans were charged by a federal grand jury in connection with the Danziger Bridge shootings in an investigation led by the Justice Department.