equinocavus

例句：

1. 1. The horse's back was adorned with an equinoctal decoration.
   马的背部装饰着一个马鞍形的装饰品。
2. 2.The equinoctal design on the coat is quite unique.
   这件外套上的马鞍形设计非常独特。
3. 3. The equinoctal shape of the moon has been observed during the full moon.
   在满月期间观察到了月亮的马鞍形形状。