shutter bar

例句：

1. 1.The shutter bar on the window is broken.
   窗户上的百叶窗杆坏了。
2. 2. He fixed the shutter bar and opened the window.
   他修好了百叶窗杆，打开了窗户。
3. 3.The shutter bar was a pain to adjust every morning.
   每天早上调整百叶窗杆都很麻烦。