因此我敦促，国会和我的行政团队一起确保我们在世界上经济保持最强大，最有活力且最有希望。
So I urge Congress to come together with my Administration now to ensure that our economy remains the strongest, most vibrant, and most hopeful in the world.
演讲人将世界食物危机归究于气候变化、耕地减少和生物燃料的生产，敦促我们采取措施应对这一危机。
The speaker owes the world food crisis to the climate change, the loss of farmland and the production of biofuels, and urges us to take measures to deal with this crisis.
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