drain elbow

例句：

1. 1. The plumber had to installa new drain elbow in the kitchen sink.
   水管工不得不在厨房水槽里安装一个新的排水弯头。
2. 2. The construction crew useda special tool to remove the old drainelbow and replace it with a new one.
   建筑工人使用一种特殊的工具来拆除旧的排水弯头，并用新的替换它。
3. 3. The engineer carefully measured the length ofthe pipe and marked the location for thenew drain elbow.
   工程师仔细测量了管道的长度，并标记了新排水弯头的安装位置。