secretionary covering

例句：

1. 1. The new car has a sleek and stylish exterior design.
   这款新车拥有光滑而时尚的外观设计。
2. 2.The roof of the house is covered with tiles.
   房子的屋顶铺满了瓷砖。
3. 3. The raincoat covers her from head to toe.
   这件雨衣从头到脚都覆盖着。