unit trust指“单位信托”，该种信托的基本原则是，由管理公司购买大量的，种类分散的各种可交易的证券，然后将该证券组合的利益按股份单位（units）或次单位（sub-units）的方式向社会公众进行再出售。股份单位的持有人即根据其在总的股份单位数量中所占的比例而对不可分割的信托基金拥有某种利益，从证券股息扣除受托人、管理人费用后的净收入中按比例获得收益分配，通常是每年两次。

这是小投资者通过对大范围的股票交易进行投资而分散风险的一种投资方法。它可以采用固定信托（fixed trust），即投资是事先声明的，且不得变更；也可以采用可变通信托或管理信托（flexible trust; managed trust）的方式，管理人可以在更大的范围内选择投资，并可以根据自己的判断而改变投资。

为了更好的理解该词，以下是其英文释义：A unit trust is an unincorporated mutual fund structure that allows funds to hold assets and provide profits that go straight to individual unit owners instead of reinvesting them back into the fund. Mutual funds are investments that are made up of pooled money from investors, which hold various securities, such as bonds and equities. However, a unit trust differs from a mutual fund in that a unit trust is established under a trust deed, and the investor is effectively the beneficiary of the trust.

双语例句：

（1）For the purpose of this paragraph there shall be disregarded any shares held by a Director or his associates as bare or custodian trustee and in which he or any of them has no beneficial interest, any shares comprised in a trust in which the interest of the Director or his associate(s) is/are in reversion or remainder if and so long as some other person is entitled to receive the income thereof, and any shares comprised in an authorised unit trust scheme in which the Director or his associate(s) is/are interested only as a unit holder and any shares which carry no voting right at general meetings and very restrictive dividend and return of capital right.

就本段而言，将不计算董事或其联系人士作为受托人或受托管人所持有而该董事或其任何联系人士并无实益之任何股份、在若干其他人士有权取得上述收入之情况下董事或其联系人士须归还或剩余权益之信托所涉及之任何股份、董事或其联系人士仅以独立持有人身份拥有权益之法定单位信托计划所涉及之任何股份、以及在股东大会上并无投票权及所获取相当有限之股息及退回之股本权利之任何股份。

（2）Investors should note that an exchange traded fund ("ETF") is different from a typical unit trust and many factors will affect its performance.

投資者須注意交易所買賣基金 ( ETF ) 跟常見 單位信託基金有所不同，許多因素可影響其 表現。