shutter blade

例句：

1. 1. The shutter blades on the window are rusted and need to be replaced.
   窗户上的百叶窗叶片生锈了，需要更换。
2. 2.The old shutter blades were too heavy for the new windows.
   旧的百叶窗叶片太重，不适合新的窗户。
3. 3. The repairman replaced the damaged shutter blade with a new one.
   修理工用一个新的百叶窗叶片替换了损坏的部分。