Harry Potter might receive lessons in defense against the dark arts, but fans of J. K. Rowling's books will be helpless in the face of the most powerfully marketed book in British publishing history.

哈利·波特可能会在魔法学校学到如何对抗邪恶势力，但面对这本英国出版史上促销力度最大的书，J·K·罗琳的追随者们却无计可施。

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Social pessimists, though, face the dark side of what sociologist Robert K. Merton—who coined the expression 'self-fulfilling prophecy'—has called a 'reign of error'.

然而，社交悲观主义者则面临着术语“自我实现预言”的创造者，社会学家Robert K. Merton所说的“错误支配”。

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The extracellular Mn-peroxidase secreted by Pycno-porus sanguineus K-2352 in high-nitrogen medium under absolute dark condition was studied.

对血红密孔菌在避光、高氮培养基中，产生胞外锰过氧化物酶进行了研究。

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This song by K.D.Lang is about dreaming of spring in cold dark places.

VOA: special.2010.03.15

The 8-year-old girl from Barcelona, Spain, with dark blond hair was placed in the Coral Way Bilingual K-8 Center, the nation's oldest bilingual school.

NPR: Instruction Of Students Learning English Bleak

In particular, it is important to regularly consume dark green leafy vegetables including spinach, romaine lettuce, or kale which are good sources of vitamin K, E, and C, as well as beta-carotene rich, orange-colored vegetables such as carrots, sweet potatoes, and squash.

CNN: Is it OK to eat the same foods every day?