这种堰称之为拦水坝。
因此，应采取建设拦水坝和排水沟等措施，降低环境风险。
Therefore, to reduce environmental risks, drains and holding-water DAMS should be constructed.
一个小拦水坝将虾虎鱼引导到一侧，并把它们冲进陷阱之中。
Small weirs divert them to one side, where they are washed into traps.
小河在望远镜里显得清澈而平静，打着漩涡的水从拦水坝泻下来，底下的水花在风中飞溅。
The stream showed clear and smooth-looking in the glasses and, below the curl of falling water, the spray from the dam was blowing in the wind.
小河在望远镜里显得清澈而平静，打着漩涡的水从拦水坝泻下来，底下的水花在风中飞溅。
The stream showed clear and smooth-looking in the glasses and, below the curl of falling water, the spray from the dam was blowing in the wind.
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