(1)联合体(企业)(group of people or companies acting together in business)[C]：a newspaper/manufacturing～报业/制造业联合体;an industrial～工业联合体;

(2)联合收割机(agricultural machine that cuts，threshes，and cleans grain)[C](=combine harvester)：The farmer hired a～.那农场主租了一台联合收割机。