1.eager beaver:one that is exceptionally, often excessively industrious or zealous 雄心勃勃的人；过于勤奋或热心的人
e.g.:The eager beavers of industry seldom reach their potential, much less rise to the top.
那些在企业卖力干活人，几乎不能发挥他们的潜能，更不用说成为佼佼者。
2.from all walks of life:各行各业
w.g.:We welcome people from all walks of life to give us rational suggestions to improve our service quality.
我们欢迎各行各业的人们给我们提出合理的建议，以便我们改进服务质量。
3.corroborate:confirm, show to be true, right, or valid　论证或证明……正当、正确或有效
e.g.:His evidence corroborates my story.
他的证据充分证实了我所讲的故事的真实性。
4.put to shame:使失色；使相形见绌
e.g.:Our professor is on the ball （勤奋, 有见识）in almost everything, putting all of us to shame.
我们的教授几乎在一切方面都才华横溢、知识渊博，使我们大家都自愧不如。
5.exception:例外；除外
e.g.:We praised them all, with two exceptions.
我们称赞了所有的人，只有两个例外。
e.g.:There is an exception to this grammatical rule.
这条语法规则有个例外。
e.g.:The exception proves the rule.
例外能反证规律。
6.an early bird:早到者；捷足先登
e.g.:Mr. Yan began his summer project in early April, because he knew that the early bird catches the worm.
阎先生在四月初就着手暑假项目，因为他清楚：捷足先登。
7.work one's fingers to the bone:拼命干活；非常努力地工作
e.g.:Mr. Brown worked his fingers to the bone to make enough money to buy a new house.
布朗先生为了挣钱买新房拼命地工作。