racket (n) a dishonest business or practice, especially one that obtains money through fraud or extortion 诈骗钱财
[例] They are making a good living by a smuggling and racket.
rally (n) a notable rise in stock market prices and trading volume after a decline 价格骤然回升
[例] a rally in share
rate of return (n) the amount of profit ,dividend or interest received from an investment, expressed as a percentage of the original investment 收益率
[例] Your investment will absolutely receive a poor rate of return.
rating (n)the popularity of a television or radio program as estimated by a poll of segments of the audience收视（听）率
[例] This radio programme has a very high rating among teenagers.
R&D research and development研发
[例] Dept. of R&D
raise [ reiz ] (n.) increase in salary涨薪水
[例] She asked for a raise.
(v.) 1. increase增加
[例] We raised the dividend by 5%.
2.obtain获得
[例] We are trying to raise $50,000 on the money market.
3. bring up in discussion提出
[例] We raised the question of prices at the board meeting.
