其次，小麦和水稻的产量增长一直低于玉米和大豆。

Second, yield growth has been lower in wheat and rice than in corn and soyabeans.

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那些谷类(小麦面包，全麦等等)中的纤维最为有效，其次是水果和蔬菜中的纤维。

These are fiber from grain sources (wheat bread, whole grains, etc.) that would be most beneficial, followed by fiber consumed in fruits and vegetables.

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那些谷类(小麦面包，全麦等等)中的纤维最为有效，其次是水果和蔬菜中的纤维。

These are fiber from grain sources (wheat bread, whole grains, etc.) that would be most beneficial, followed by fiber consumed in fruits and vegetables.

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