It's difficult to keep track of all this shifting research.

很难记下所有这些转变的研究。

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The result is a shifting, difficult landscape only barely understood even by insiders.

结果就出现了只有内部人士才能理解的、变了味的复杂格局。

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It's very difficult for the chef and his staff to safely cut and prepare vegetables or cook soups and other liquids in a constantly shifting kitchen.

厨师和他的工作人员安全地切断和准备蔬菜或做汤等液体在一个不断变化的厨房很困难。

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If you're looking to do the same, finding the right bank can be difficult amid a shifting landscape in which many institutions are hiking fees.

FORBES: Magazine Article

Al Qaeda is adapting methods to make their plots more difficult to detect, shifting from large attacks with multiple players to using individuals without any background in terrorism, Panetta said.

CNN: STORY HIGHLIGHTS

Many of these directors have found it difficult to adjust to the shifting demands of Chinese movie-going.

ECONOMIST: Modern-day life is now the focus of the best films from China