( The most visible result of this buoyant market in both centres

( The most visible result of this buoyant market in both centres is a plethora of new multi-storey commercial and residential buildings. In Abu Dhabi,these projects are let through the Klaifah committee or the Department of Social Services to local consultants,but in Dubai there is more of an international spread. Building work apart,consultants prediet a fairly wide spread of projcts.“We expect the market to remain buoyant for the next couple of years.There is a fair bit of work at Mina Zayed coming up,a fair bit of road-working on the island and the hinterland,and we expect some airport delopment to rear its head in the not too distant future,”says one long-established Abu Dhabi-based consultant.):Please explain “rear its head”and“Abu Dhabi-based in the last sentence.
【正确答案】："Rear its head" means “appear” and “Abu Dhabi based” means with their headquarters in Abu Dhabi.