All animal, bird, fish or egg derived protein plays a role in the formation and promotion of cancer, but the most potent so far is casein.

所有动物、家禽、鱼或蛋类来源的蛋白都在癌症的形成和扩散过程中起一定作用，其中，酪蛋白起的作用最为重要。

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For the study, Lee and Schwarz asked 87 students to play the role of lawyers competing with a colleague, "Chris, " for a promotion.

Lee和Schwarz共选取了87个学生来进行实验。 参与者扮演正在与同事Chris竞争升职机会的律师。

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Search engine in the promotion of the huge role in the network is no doubt.

搜索引擎在网络推广中的巨大作用是毋庸质疑的。

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We emphasized the importance that both our countries attach to the role of the United Nations in the promotion of peace, democracy, good governance and human rights.

WHITEHOUSE: The White House

There are approximately fifty recognized practitioners of Taekkyeon at present, and the Korean Taekkyeon Association plays a significant role in the transmission and promotion of this traditional martial art.

UNESCO: Intangible Cultural Heritage

Therefore, education on human rights and the dissemination of proper information, both theoretical and practical, play an important role in the promotion and respect of human rights with regard to all individuals without distinction of any kind such as race, sex, language or religion, and this should be integrated in the education policies at the national as well as international levels.

UNESCO: Vienna Declaration and Programme of Action