investment bank
noun [ C ] uk/ɪnˈvest.mənt ˌbæŋk/ us/ɪnˈvest.mənt ˌbæŋk/
投资银行
a bank that helps companies sell and buy shares, or helps them buy other companies or merge (= join together) with each other
investment banking
noun [ U ] ukus
运作投资银行业务
the business of operating an investment bank
investment banker
noun [ C ] ukus
投资银行家
someone who has an important job in an investment bank