bag of tricks 比喻能届时解决紧急问题而又暂时保密的好办法

　　The total skills, knowledge, and often secret abilities that a person has (a traditional reference to a magician’s bag).

　　EXAMPLE:

　　To be a successful in today’s competitive business environment, an executive has to use everything in his bag of tricks.

　　blow off steam 发脾气

　　to release frustration or anger that has been building up; also to celebrate or do something in a loud or noisy way

　　EXAMPLE:

　　After a week of negotiations with the union, the workers decided to have a party and blow off steam.

　　blue chip 蓝筹股(稳而值钱的股票), 稳当可靠的财产

　　(adj.)

　　a type of stock highly valuesd for its long record of steady or long term earnings; also a valuable property

　　EXAMPLE:

　　The investor bought 100 shares of stock in a blue chip company.

　　bone of contention 争论的焦点

　　a disagreement, dispute, or argument about something; a strong difference of opinion; a conflict

　　EXAMPLE:

　　A bone of contention was the division of powers between the national and provincial governments.