今天我们要学的词是 beef up. To beef up 意思是加强力度。Russia and Ukraine have beefed up accusations against each other of cross-border attacks. 在跨境袭击的问题上，俄罗斯和乌克兰加大了相互指责的声浪。与此同时，The U.S. and E.U. beefed up economic sanctions against Russia. 美国和欧盟加强了对俄罗斯的经济制裁。美国国庆前后芝加哥发生血腥枪支暴力后，Attorney General Eric Holder announced measures to beef up Chicago's crime fighting power. 美国司法部长霍尔德宣布措施，加强芝加哥打击犯罪的能力。好的，今天我们学习的词是 beef up, beef up, beef up...