From Washington, this is VOA news. I'm Dave DeForest reporting.The American defense chief calls for more effort from the Iraqis: U.S. Defense Secretary Ashton Carter is calling on Iraq to make a greater commitment to fight the Islamic State. Carter said the Iraqis have failed to recruit enough ground troops to fight the militants that have taken over large parts of the country. ____________________ 这里是华盛顿,美国之音为您报道.这里是大卫.的福斯特为您报道.美国国防部长呼吁伊拉克做出更多努力:美国国防部长阿斯顿.卡特正呼吁伊拉克在打击伊斯兰国一事上做出郑重承诺.卡特表示,伊拉克未能招募到足够的陆军来对抗武装分子,然而后者已经夺取了该国的绝大部分城市._____________