disapperance of nasolabial sulcus

例句：

1. 1.The sun sets in the west, leaving behind a disapperance of light.
   太阳在西边落下，留下了一片黑暗的消失。
2. 2.The forest has been reduced to a disapperance of trees and bushes.
   森林已经变成了一片光秃秃的树木和灌木丛的消失。
3. 3. The river's flow has diminished, leaving only a disapperance of water.
   河流的流动减弱了，只剩下一片水迹的消失。