@CharlesBHallPhD @heatherwritesss @EpiEllie Still requires spending money but the energy losses can be largely mitigated.
https://en.wikipedia.org/wiki/...
@CharlesBHallPhD@Heatherwritess@EpiEllie仍然需要花钱，但能源损失可以在很大程度上得到缓解。
https://en.wikipedia.org/wiki/...