Nothing is more difficult than to restore authority after it has been shaken.
天下的难事,莫过于恢复已被动摇了的权威.
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It is difficult to get statistics on race, but the following patterns are clear.
很难对人种作出统计, 不过从下面所给的比例应该看得很清楚.
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And methane is difficult to capture in small volumes at low concentrations.
而且,沼气在微量、稀薄的情况下不易收集.
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Damage detection is the most difficult part of structural health monitoring systems.
本文利用遗传算法搜索悬索桥结构健康监测系统中传感器的最优测点.
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It is difficult to recapture the sober , even fearful-atmosphere of those days.
现在要把握当时持重的, 甚至可怕的气氛是很困难的.
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The farmer wants to learn to raise and breed the technology is extremely difficult more.
农民要想学会饲养和繁殖技术更是难上加难.
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Over-eating or eating food difficult to digest often causes indigestion.
暴食或食用不易消化的食品常常会引起消化不良.
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Fraud is often a difficult crime to prosecute and for which to obtain punitive sentences.
诈骗通常是一项难以起诉的罪行,诈骗犯也很难得到严厉的审判.
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Value after the war, always difficult, serving only 16 months, then return home begging.
时值战乱之后, 凡事棘手, 任职仅16个月, 便乞归故里.
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