window rail

例句：

1. 1.The window rail is made of wood and has a smooth surface.
   窗户栏杆由木材制成，表面光滑。
2. 2. The window rail is designed to prevent the glass from shattering.
   窗户栏杆设计用来防止玻璃破碎。
3. 3. The window rail is a safety feature that helps keep children away from the window.
   窗户栏杆是一个安全特性，有助于将儿童与窗户隔离开。