trough gutter

例句：

1. 1. The farmer used a trough gutter to collect rainwater for irrigation.
   农民使用沟渠和排水槽收集雨水用于灌溉。
2. 2. The construction crew had to clear the trough gutter before starting work on the new road.
   施工队在开始新路建设前必须清理沟渠和排水槽。
3. 3. The water flowed smoothly through the trough gutter and reached the river below.
   水流通过沟渠和排水槽顺畅地流到了下面的河里。