a person or an organization that officially controls an area of business or industry and makes sure that it is operating fairly （某行业等的）监管者，监管机构 Ofgas, the gas industry regulator 天然气行业监管机构Ofgas banking regulators 银行业监管机构
a device that controls something such as speed, temperature or pressure （速度、温度、压力的）自动调节器 a pressure regulator 压力调节器