Decades before footprints were generally recognized as important evidence, Ward carefully covered them with a milk pan to shield them from the fine mist that had begun to fall.
在此十多年前，足迹一向被视为重要证据，沃德用一只牛奶盘小心的将足迹盖住，防止被开始升腾的雾霭所破坏。
The new truth is a shield to ward off all attacks on people's information.
新的真理是盾牌，能抵挡所有攻击信息之人。
Optimum analysis for the back-ward earth pressure has been studied, the best monitoring scheme of shield lining and the worst monitoring scheme of shield lining has also been acquired.
开展了管片工作土压力的反演最优解分析，得到了监测方案的最优布置方案和最差布置方案。
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