Jules Pretty: What we're saying is, look at the system first of all, and see how you can manipulate it.

朱尔斯·皮雷蒂：我们的方法是首先审阅整个系统，判定是否具备可操控性。

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Jules Pretty said that global food production will have to increase by 50-100% in the next 30 to 40 years, in order to feed Earth's growing population.

朱尔斯·皮雷蒂说全球粮食产量在未来30 - 40年要增长50% - 100%，以保障全球日益增长人口的食物供给。

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Jules Pretty said that global food production will have to increase by 50 to 100% in the next 30 to 40 years, in order to feed Earth's growing population.

朱尔斯·普雷蒂表示，随着人口不断增长，在未来的30到40年间全球粮食产量必须增产50%至100%以满足人口需要。

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A Royal Society research team member, Jules Pretty, says the team took into account a number of changes that are expected in coming decades, such as climate change, massive rises in world population, and new consumption patterns.

VOA: standard.2009.10.21

Prof Jules Pretty, the deputy vice-chancellor of Essex University, said universities needed to do more to help students into work.

BBC: University graduates in job struggle