n.堰，拦河坝，导流坝

原形：weir复数：weirs

The weir across the river controls the water level for irrigation.
这座河上的堰坝用来调节灌溉用水的水位。
The fish ladder beside the weir enables salmon to migrate upstream.
堰坝旁的鱼梯让鲑鱼能够逆流而上。
The village was flooded when the weir broke during the storm.
暴风雨中堰坝破裂，导致村庄被淹。
The weir created a calm pool where children could swim safely.
堰坝形成了一片平静的水域，孩子们可以在那里安全地游泳。
The water flow over the weir is measured to monitor the river's discharge.
通过测量堰坝上的水流来监测河流的流量。
The old weir had deteriorated so much that it needed to be replaced.
这座旧堰坝已经破损严重，需要更换。
The weir serves as a picturesque backdrop for photographers.
这座堰坝为摄影师提供了一个如画的背景。
The construction of the weir disrupted the natural habitat of the river ecosystem.
建造堰坝打乱了河流生态系统的自然栖息地。
Boaters need to be cautious when navigating around the weir.
划船者在堰坝周围航行时需要谨慎。
The weir's spillway releases excess water during heavy rainfall.
堰坝的溢洪道在大雨期间排放多余的水分。