The paper will be based on a 2D tide current numerical model to analyze the change of tide current field and the influence of sand silt before and after engineering.

本文从计算潮流入手，建立一个潮流数学模型来计算潮流场，分析工程建设前后潮流场的变化，并分析了工程前后泥沙回淤情况。

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He suggests that focusing on individual diet plans of any kind may be misguided, and that only community-wide change will truly be able to stem the tide of obesity.

他认为任何一种针对于个人的饮食计划都是不明智的，只有在社会团体范围内的改变才能真正遏制肥胖的浪潮。

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Moments like these can change the nature of the battle and turn the tide for either side.

这样的时刻能改变战斗的本质，改变双方的形势。

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"You know, we're seeing a bit of a change in tide as things get better, but we certainly felt it for a little bit, but as we're all doing, we're tightening the belts and working harder to find those other dollars."

VOA: standard.2010.02.21

Who was I to change the tide of history regarding such things.

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But even outside of New York, the super-high-end home market comprises so few properties that just one sale can change the tide of the market.

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"There's a tide of change sweeping New Hampshire and America, " Romney says in the ad.

CNN: Candidates talk change on the campaign trail