Economic inequality is the "defining challenge of our time", President Barack Obama declared in a speech last month to the Center for American Progress.

美国总统巴拉克·奥巴马上月在美国发展中心的一次演讲中宣称，经济不平等是“我们这个时代的决定性挑战”。

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Its control center is based in the forebrain, and it regulates breathing for use in speech, singing, sighing, and so on.

它的控制中心在前脑，而且它管理说话、唱歌、叹气等行为下的呼吸活动。

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Obama's speech on a generator-powered television at the Misurata medical center, he said, "we are very heartened by Mr." Obama's words.

在米苏拉塔市医院中心观看到由发电机供电的电视中播放奥巴马的演讲后，他说，“听到奥巴马的讲话我们都觉得很感动。”

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"I know we've made tactical errors, thousands of them, I'm sure, " she said in a speech at Blackburn's Chatham House -- a center for independent research on global issues.

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The right-of-center government of Prime Minister Benjamin Netanyahu issued a short and restrained statement of support after the speech.

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