[] an arrangement to do sth at a particular time, especially sth official or sth connected with your job （尤指正式的或与工作有关的）约会，约定，预约◆I had to refuse because of a prior engagement. 由於有约在先我只好拒绝了。◆She has a number of speaking engagements next month. 她下月有几次演讲预约。◆an engagement book/diary 预约簿／日志
() [, ]an arrangement to employ sb; the process of employing sb 雇用；聘用◆The terms of engagement are to be agreed in writing. 聘用条件将以书面协议形式确认。