They run a car that to all intents and purposes is a commercial delivery vehicle.他们开了辆车，实际上是一辆商用运输车。Lots of homes in town double as businesses.镇里的很多民宅还兼做商用。The archaeologists uncovered both domestic structures and what appear to have been commercial buildings.考古学家发现了民居结构和看上去像商用的建筑。