Power tower systems (also known as "central receiver" systems) use a field of large, flat mirrors to track and reflect sunlight onto a receiver mounted at the top of a tall tower.
电力塔系统（也称为“中央接收器”系统）的使用领域广泛，在高塔顶部的接收器上安装平面镜，用于追踪和反射光。
The front of ancient bronze mirrors has flat and concave surface .
古代青铜镜的镜面有平面的，也有凸面的。
The buildings look like boxes with flat roofs, sharp corners and glass walls that act as mirrors. You do not feel invited to enter them.
建筑物像箱子，有平顶、尖角，还有充当镜子的玻璃墙，感觉不到欢迎你进去。
The buildings look like boxes with flat roofs, sharp corners and glass walls that act as mirrors. You do not feel invited to enter them.
建筑物像箱子，有平顶、尖角，还有充当镜子的玻璃墙，感觉不到欢迎你进去。
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