calcic horizon

例句：

1. 1.The sun sets over the calcic horizon, casting a warm glow over the land.
   太阳在钙质地平线上落下，给大地投下温暖的光辉。
2. 2. The calcic horizon is visible from the mountaintop, marking the boundary between sky and earth.
   从山顶可以看到钙质地平线，标示着天空与大地的分界。
3. 3. The calcic horizon is a symbol of the natural beauty that surrounds us every day.
   钙质地平线是我们每天周围自然美景的象征。