mole drainer

例句：

1. 1. The old house had a leaky roof that needed to be fixed with a new mound drainer.
   这所老房子的屋顶漏水需要用新的排水沟来修理。
2. 2. The garden needs to be landscaped with proper mound drainers to prevent water runoff.
   花园需要用合适的排水沟进行景观设计，以防止积水。
3. 3. The construction crew used special mound drainers to divert the rainwater away from the foundation of the building.
   建筑工人使用特殊的排水沟将雨水引离建筑物的基础。