學個詞 Learn A Word:1696 expansion

　　今天我們要學的詞是expansion。Expansion 擴展，擴充。The Kennedy Arts Center unveiled a $100 million expansion plan. 肯尼迪藝術中心宣布擴展計劃，耗資一億美元。President Obama supported the expansion of H1B visas from 65,000 to 115,000 a year. 美國總統(tǒng)奧巴馬支持將每年的外籍人員工作簽證發(fā)放數(shù)量從六萬五千個增加到11萬五千個。The Pentagon is moving toward a major expansion of its cyber security force to counter increasing attacks on the nation's computer networks. 美國五角大樓計劃擴充負責網(wǎng)絡安全的人員和能力，抵御美國電腦系統(tǒng)受到的越來越多的攻擊。好的，今天我們學習的詞是 expansion, expansion, expansion...