學(xué)個(gè)詞 Learn A Word:1229 step up

　　今天我們要學(xué)的詞是step up. To step up, 是加強(qiáng)的意思。 "Our team stepped up our defense in the second half and won the game," 我們隊(duì)下半場(chǎng)比賽加強(qiáng)防守，最后贏得了比賽的勝利。 "Former Fed Chairman Alan Greenspan is stepping up his call for Congress to let the Bush-era tax cuts expire," 前美聯(lián)儲(chǔ)主席格林斯潘加大呼聲，要求國(guó)會(huì)讓布什任期內(nèi)通過(guò)的減稅法案到期自動(dòng)失效。 "France stepped up its efforts to block north African migrants from entering its territory from Italy," 法國(guó)加大力度，阻止非洲北部的人從意大利進(jìn)入法國(guó)。好的，今天我們學(xué)習(xí)的詞是step up...