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来源:雅诚德英语网
Experts agree that the next few decades will present a puzzle: how to feed nine billion people without wrecking the planet in the process.
专家们一致认为在未来几十年内将出现一个难题:如何在不破坏地球的情况下养活90亿人口。
Experts agree that the next few decades will present a puzzle: how to feed nine billion people without wrecking the planet in the process.
专家们一致认为在未来几十年内将出现一个难题:如何在不破坏地球的情况下养活90亿人口。