lemniscate of Bernoulli

例句：

1. 1. The lemniscate of the moon casts a shadow over the forest.
   月亮的卵形阴影覆盖了森林。
2. 2.The scientist found the lemniscate in the center of the room.
   科学家在房间中央发现了这个卵形物体。
3. 3.The artist painted a lemniscate on the wall as a decorative element.
   艺术家在墙上画了一个卵形元素作为装饰。