His defeat was quite a comedown for all of us.他的失败令我们全体感到失望.She find it a comedown to listen to her former subordinate.她觉得要听她以前部下的指挥很降格.The clouds comedown so suddenly we had no warning.突然天气乌云密布,此前毫无征兆....
The formal demonstration of system acceptability to obtain authorization for its operational use.为使系统获准投入运行性使用,对系统的可接受性所做的正式演示.The vehicle that permitted both communication and acceptability was social revolution.既能实现交流又...