cross sill

例句：

1. 1. The thief crossed the sill to steal the valuable paintings.
   小偷越过栅栏偷走了珍贵的画作。
2. 2.The hunter carefully crossed the sill of the cage to get closer to the deer.
   猎人小心翼翼地穿过笼子的栅栏，接近鹿。
3. 3.The carpenter had to cross the sill to reach the ceiling.
   木匠不得不穿过天花板上的缝隙。