哪位少侠美女学金融学学过商务英语这门课的，帮我解释一下， 股票 债券 基金 金融学 会计学 市盈率，这几个词的专业的英文的名词解释，注意，是名词解释！！ 感激不尽
Budget 预算
an account of probable future income and expenditure during a stated, period, usu. a year used as a guide in making financial arrangements.
Return 回报
the gain from an investment, either as income or yield or as profit on the sale of the investment.
Portfolio证券投资组合
the entire collection of investments in the form of stocks, bonds, or certificate of deposits for purposes other than controlling
Royalty 专利税
money paid to the owner of a copyright for permission to publish copyright material and to the owner of a patent for permission to use a patented design, usu. at a greed percentage of the selling price of the product.
Patent 专利权
a special right to an inventor to be the only person to make and sell, or to authorize others to make and sell a newly-invented machine or process.