Around 90% of the power they consume is emitted as heat rather than light.

它们所消耗的电能的90%都以热量的形式消散掉了，而不是发光的形式。

youdao

Around 90% of the power they consume is emitted as heat rather than light.

它们所消耗的电能的90%都以热量的形式消散掉了，而不是发光的形式。

youdao