本期内容：

In a fiery debate between the Republican contenders for the American presidency, Marco Rubio’s lightweight record came under heavy attack from his mainstream rivals, such as New Jersey’s governor Chris Christie. Donald Trump, still the front-runner in the New Hampshire primary on Tuesday, said he would support torture of terrorists by means “a hell of a lot worse” than waterboarding.

词义解析:

Fiery: 激烈的
Contender：竞争者
Under heavy attack：遭受猛烈攻击
Governor：州长
Front-runner：领跑者
Primary：初选
Torture：折磨
Waterboarding：水刑