[] to mention or use a law, rule, etc. as a reason for doing sth援引，援用（法律、规则等作为行动理由）◆They delayed their payment, invoking a ten-day grace period (= extra time) allowed under the terms of the deal.他们援引交易条款中规定的 10 天宽限期推迟了付款。 () to begin to run a program, etc.调用；启动◆This command will invoke the HELP system.这条指令将启用“帮助”系统。