1. The car's sunshade helped keep the interior cool on hot sunny days.
汽车的遮阳伞在炎热的阳光明媚的日子里有助于保持车内凉爽。

2. The beach umbrella acted as a sunshade, providing some relief from the intense heat.
海滩伞充当着遮阳蓬的作用，给人们提供了些许从炽热太阳下的减轻。