And even if they do not replace batteries entirely, the world will surely be seeing more of them in applications which need that little bit of extra oomph from time to time.

• 与此同时，即使它们不能完全得取代电池，在世界上将会有它们的身影活跃在一些应用设备之中，这些应用设备中常常需要一点额外的活力。