[intransitive] to work in the correct way起作用；正常工作；运转◆The fire alarm system is now functioning again.火灾警报系统目前恢复了运行。◆a fully functioning market economy全面运作的市场经济 SYN operate ●ˈfunction as sb/sthto perform the action or the job of the thing or person mentioned起…作用；具有…功能◆The sofa also functions as a bed.这沙发也可当床用。◆The managers had already been functioning as owners of the company.经理们已把自己当成了公司的老板。