今天我们要学的词是jack up。 To jack up, 意思是提高。 "Insurance company Blue Shield of California plans to jack up its health insurance rates a whopping 59% for individual policyholders this year," 加州蓝盾保险公司今年打算把个人投保人的保费大幅度提高59%。 "U.S. Mortgage giant Fannie Mae is jacking up mortgage fees even for home buyers with a high credit score and a huge down payment," 美国房贷大公司房利美提高贷款收费，即使是那些拥有良好信用记录和大笔首付款的购买者也在劫难逃。好的，今天我们学习的词是jack up...