"It is not a metabolite usually thought of as toxic," said Swan, director of the Center for Reproductive Epidemiology at the University of Rochester School of Medicine and Dentistry.

“这不是人们一般概念中的有毒代谢物，”斯维恩说。她现在是罗切斯特医科大学生殖流行病学中心主任。

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“There’s always an interest in the annual temperature numbers and on a given year’s ranking, but usually that misses the point,” said James Hansen, the director of GISS.

人们总是热衷于每年气温的数字和特定年份的等级，却常常忽略了关键。

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So in a way, I can say a documentary film director is usually a scholar, at least semi-scholar.

所以，从某种意义上说，我可以说纪录片导演通常也是个学者，至少是半个学者。

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Unless a director is already attached to a project, the list usually starts with some fantasy names and then gets whittled down to more realistic names when you find out that, say, Christopher Nolan and Guillermo del Toro are booked solid until the year 2025 or that Catherine Hardwicke is out of your budget range thanks to Twilight.

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Great fragrances are usually made by a perfumer, and an art director, who says, 'I want it to be like this.

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Usually fans are angry when a film adaptation strays too far from a novel, said casting director David Rubin.

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