短语讲解：
1. The Republican presidential contenders take part in the first of three debates on Wednesday, while President Barack Obama delivers a major speech on the economy and jobs Thursday before a joint session of Congress.
take part in参加…, 参与…活动
例句：John takes part in many school activities.
约翰参加很多学校里的活动。
2. There is one in particular who has created jobs all over the world.
in particular特别地;尤其
例句：She stressed that point in particular.
她特别强调了那一点。
3. "He [Romney] is going to come out swinging hard against Rick Perry," said Ornstein.
come out结果是…; 得出答案
例句：Let me know how the voting comes out.
告诉我投票结果如何。
4. It is expected that the Republican contenders will focus their rhetorical fire on President Barack Obama and his economic record during the upcoming debates.
focus on致力于
例句：He focused his mind on his lessons.
他把心思集中在功课上。
5. The president, meanwhile, is preparing for a major speech on the economy and jobs Thursday before a divided U.S. Congress.
prepare for (使)为…作准备
例句：Right now they are preparing themselves for the Olympic Games.
眼下他们正在为参加奥运会作准备。
