它们的耗电量仅是平凡灯泡的三分之一，持续时间却是后者的10倍。

They use about one-third of the energy of normal bulbs and last 10times as long.

youdao

它们的耗电量仅是平凡灯泡的三分之一，持续时间却是后者的10倍。

They use about one-third of the energy of normal bulbs and last 10times as long.

youdao