They built a dam to hold back the rushing water.
他们修建了一个大坝来拦截汹涌的河水。
A dam is a barrier holding water back.
水坝是防堵水的障碍物。
When the dam is completed, it will back up a large lake.
大坝建成后会将水堵住形成一个大湖。
The dam was not strong enough to hold back the flood water.
大坝不够坚固，阻挡不了洪水。
When the dam seepage, choose "near water cutoff, back water guide" approach.
当坝体渗水，选用“临水截渗，背水导渗”的方法。
When the dam seepage, choose "near water cutoff, back water guide" approach.
当坝体渗水，选用“临水截渗，背水导渗”的方法。
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