这5个单词的名词解释，必须用英语。

1.Treaury Bills国库券 ---> Treasury

2.Financial institution 金融机构

3.portfolio (证券、股票)组合

4.Insurancy Industry 保险业 ——> insurance industry ; insurancy 不存在

5.Junk bond 风险债券

金融市场的吧~
1.Treaury Bills
A United States Treasury security is a government debt issued by the United States Department of the Treasury through the Bureau of the Public Debt.

2.Financial institution
In financial economics, a financial institution is an institution that provides financial services for its clients or members.

3.portfolio
In finance, a portfolio is an appropriate mix of collection of investments held by institutions or a private individual.

4.Insurancy Industry
Insurance, in law and economics, is a form of risk management primarily used to hedge against the risk of a contingent loss.

5.Junk bond
In finance, a high yield bond (non-investment grade bond, speculative grade bond or junk bond) is a bond that is rated below investment grade at the time of purchase.

100% 正确率。 解释是出自我电脑里的Babylon7 Professional的商业词库 和 Babylon7 Professional的简明牛津字典.~

1.Treasury Bills
debt obligations of the U.K.Treasury that have maturities of one year or less.

2.financial institution
establishment dealing with monetary matters

3.portfolio
Noun
1.） a case for carrying papers or drawings or maps; usually leather
(hypernym) case
2.）a list of the financial assets held by an individual or a bank or other financial institution
(hypernym) list, listing
3.） the role of the head of a government department; "he holds the portfolio for foreign affairs"

4.Insurancy Industry
insurance business

5.Junk bond
a high-yielding high-risk security, typically issued to finance a takeover.

1expenditure of a country or an community.etc

2.a certain organization which engaged in finance

3.a case for keeping loose sheets of paper,drawings.etc
4.maybe a field engaging in insurance service? not sure about this one~

5.A bond (an instrument of debt) which is considered below "investment grade" due to a significant risk of default by the issuer (this one was copied from google translator^ ^)