zenithal equal-area projection

例句：

1. 1.The sun is at its zenithal point in the sky.
   太阳在天空中正午的位置。
2. 2. Midday is the time when the sun is at its highest point in the sky.
   正午是太阳在天空中最高点的时间。
3. 3.We decided to meet at noon for a picnic lunch.
   我们决定中午见面吃野餐午餐。