以下为句子列表：
英文: 4 For dredging works, only mechanical dredgers with bucket-type closed-grabs shall be used for the dredging of river bed or ponds.
中文: 进行挖泥工程时，只可使用密封抓斗式的机械挖泥机，以挖掘河床或塘底的淤泥。
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英文: A kind of automatic measuring instrument for 3-D river bed model topography is introduced.
中文: 摘要针对目前常用的电阻式地形仪存在的问题，介绍了一种新型的河床模型三维全自动地形仪。
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英文: An ancient bus stopped by a dry river bed and a party of famous actors and actresses got off.
中文: 一辆古旧的大客车在一条干涸的河床边停下，一群著名男女演员下了车。
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英文: Based on the analyses of the flow and sediment characteristics and evolution trend of the river bed of the Fuling reach in the Yangtze River before and after the impoundment of the Three Gorges Reservoir, the water level, velocity variation and influenced
中文: 摘要在分析长江涪陵段的水沙特性和三峡水库蓄水前后该河段河床演变趋势的基础上，运用二维水流数学模型，分析了4种流量组合情况下在三峡水库运用前和运用50年，涪陵港区码头修建前后的水位、流速变化及其影响范围。
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英文: Like the tree roots buried beneath the earth and the stones under the river bed with nimbus,these resources belong lawfully to the discoverer who found them with special eyes and insights.
中文: 它就像那埋在土里的具有灵气的树根、埋在河床的具有灵气的石头,谁独具慧眼,谁就是它的主人。
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