curtain drain

例句：

1. 1.The curtains were stained with water, and the curtain drain was clogged.
   窗帘被水弄脏了，窗帘排水孔堵塞了。
2. 2. The curtain drain is essential for preventing water from seeping into the room.
   窗帘排水孔对于防止水分渗入房间至关重要。
3. 3. The curtain drain needs to be cleaned regularly to prevent mold growth.
   窗帘排水孔需要定期清理，以防止霉菌生长。