surface chill

例句：

1. 1.The surface of the lake is smooth and clear.
   湖的表面光滑而清澈。
2. 2. The surface of the ocean is vast and unforgiving.
   海洋的表面广阔而无情。
3. 3. The surface of the earth is covered in ice.
   地球的表面被冰覆盖。