Scientists have known about the urban heat island effect for decades, making maps from satellite data.

科学家们几十年来一直了解城市热岛效应，从卫星数据中绘制地图。

Like many cities, Athens suffers from the urban heat-island effect, due to trees and plants being replaced with asphalt and concrete which absorb and then release heat into the air.

和许多城市一​​样，雅典也遭受着城市热岛效应的困扰，因为树木和植物被沥青和混凝土所取代，它们吸收热量然后将热量释放到空气中。

Today, as mayor, I'm looking to plant tens of thousands more trees in Boston to grow our canopy, reduce urban heat island effect, and clean the air in our neighborhoods.

今天，作为市长，我希望在波士顿再种植数万棵树来种植我们的树冠，减少城市热岛效应，并净化我们社区的空气。