VOA慢速英语:Reform of Financial System Is Obama's Next Goal in Congress

例句：unfettered butterfly
      逍遥的蝴蝶

      I want to fly, I want to be an unfettered bird.
      我想要飞，想要做一只无拘无束的小鸟。

2.sour v.关系、态度、人等（使）变坏，恶化

3.complex adj.复杂的, 难懂的

例句：He had not a particularly complex mind.
      他的头脑并不十分复杂。

      What he said was too complex for me to understand.
      他说的太复杂了, 我无法了解。

4.constrain vt.强迫, 强使; 限制, 约束

例句：Cold weather constrained the plant's growth.
      寒冷的天气抑制了植物的生长。

      He was constraining his mind not to wander from the task.
      他在克制着不让自己在工作时分心。

5.abyss n.深渊

例句：He is plunging into an abyss of despair.
      他陷入了绝望的深渊。

      Anyone who betrays his motherland shall inevitably fall into the abyss of eternal sin and shame.
      一切出卖祖国的人都必将堕入永远被人唾骂的罪恶深渊。

6.regulate vt.控制, 管理

例句：The policeman regulated traffic at the intersection.
      警察在交叉路口指挥交通。

7.derivative n.派生物, 引出物

例句：Many English words are derivatives of Latin words.
      许多英语词来自拉丁语。