A variety of chemical batteries have been tried, as well as inductive recharging schemes and even plutonium power cells that convert the heat from radioactive decay into electricity.

尝试了各种化学电池以及感应充电计划，甚至是将放射衰变的热能转换为电能的钚电源单元格。

Hopefully a few years from now you can relax  safely in the knowledge that although it's a still, dark night your power could be  coming from chemical batteries, water, mines, Energy Vaults or all of them at once.

希望几年后你可以安全地放松，因为你知道虽然现在是一个静止的漆黑的夜晚，但你的能量可能来自化学电池、水、地雷、能源库或同时来自所有这些。