portfolio n.有价证券组合；投资组合 (英文解释In finance, a portfolio is the combination of shares or other investments that a particular person or company has.）

Short-term securities can also be held as part of an investment portfolio. 投资组合里也可以包括短期有价证券。

Roger Early, a portfolio manager at Federated Investors Corp.  

罗杰·厄尔利，联合投资者公司的投资组合经理

collection n.收集，采集;集合， 征收; 收藏品; 募