abbreviation for ultra low emission zone: an area of a city that you must pay to enter if you are driving a vehicle that produces more than a very low level of harmful emissions (= waste gases)

Private hire vehicles, like other cars, will have to meet the emissions standards to enter the ULEZ without paying. 私人出租汽车和其他汽车一样，必须达到排放标准才能进入超低碳排放区而无需付费。

Vehicles need to meet the ULEZ emissions standards or their drivers must pay a daily charge to drive within the zone. 车辆需要满足ULEZ的排放标准，否则其司机必须每日支付费用才能在该区域内行驶。