Like a telescope, it has a curvedmirror to collect the sunlight.
和望远镜一样,它有一个曲面镜来聚集太阳光。
《柯林斯英汉双解大词典》
2
Most antennas are made in the shape of a dish to collect and reflect the radio waves to the sub reflector, in the same way as a curvedmirror focuses visible light to one point.