Of nearly 100 Americans recommended to be studied, 77% were white, 18% were African American, 4% were Native American, and 1% were Latino.

在推荐学习的近100名美国人中，白人占77%，非裔美国人占18%，美国土著占4%，拉丁裔占1%。

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Researchers estimate that 77 percent of the sodium the average American consumes arrives in his or her diet via processed foods.

研究人员估计，美国人钠的平均摄取量的77%直接来自于加工过的食物。

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But researchers for the American Society for Microbiologyfound that only 77 percent actually do, when it comes to publicrestrooms. That's a 6 percent decline from a similar study in2005.

但美国微生物研究学会的研究人员指出，真正做到的人只有77%，比2005年的一项类似调查下降了6%。

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Charles "Chic" Burlingame who piloted American Airlines 77, the plane that was hijacked and flown into the Pentagon on September 11, 2001 .

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During that period American exports rose 77% in nominal terms and the trade deficit shrank from 3.2% to 0.6% of GDP.

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The death toll in Pennsylvania is 44, and 189 at the Pentagon, including the 64 people who died on American Airlines Flight 77.

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