Different versions of the MI-17 helicopter are designed specifically for high-altitude military operations and are in service in the mountains of Afghanistan.

MI - 17直升机的不同版本专门为高海拔军事作战而设计，并在阿富汗的山区服役。

youdao

Aside from operating two venture capital funds, he chairs of CHC Helicopter Corp., which provides service to the oil and gas industry in more than 30 countries.

除了运营两家风险资本基金，他还担任CHC Helicopter公司的董事长，该公司为全球30多个国家的石油和天然气企业提供服务。

youdao

Wallers said the helicopter belonged to Air Angels Inc., an emergency medical transport service based at Clow Airport in suburban Bolingbrook.

Wallers说这架直升飞机属于Air Angels公司，这是一家坐落于Bolingbrook市郊区Clow机场的专门提供紧急医疗运输服务的公司。

youdao

After the withdrawal of the helicopter service from Penzance, Skybus has become the last link from Cornwall to the Isles of Scilly.

BBC: Plastic mats to strengthen Land's End runway

Earlier this week residents on the Isles of Scilly said transport links needed to be improved to the islands when the year-round helicopter service ceases.

BBC: New plans submitted for Penzance harbour

The Children's Air Ambulance Service helicopter, based at Coventry Airport, will initially be used to transport specialist paediatric medical staff.

BBC: Children's Air Ambulance Service launched