oval of zero velocity

例句：

1. 1. Theoval of the moon casts ashadow on the ground.
   月亮的椭圆形在地面上投下了阴影。
2. 2. The oval tableis perfect for small gatherings.
   椭圆桌子非常适合小型聚会。
3. 3. The oval facetof the diamond reflects light beautifully.
   钻石的椭圆切面反射光线非常美丽。