[] a large important organization that has a particular purpose, for example a bank（银行等规模大的）机构◆a banking/an investment/a lending institution银行／投资／贷款机构◆The sale has already been accepted by the big City institutions(= the banks and finance companies in London).这个销售项目已得到伦敦的大银行和金融机构的认可。◆the Royal Institution of Chartered Surveyors英国皇家特许测量师学会 [] a custom or system that has existed for a long time among a particular group of people（由来已久的）风俗习惯，制度◆The Web as an institution seems more important than ever.万维网作为一种习惯似乎比以往更重要。 [] the act of starting or introducing sth such as a system or a law建立；设立；制订◆the institution of new safety procedures新安全措施的制订depository institution financial institution thrift institution