The Afghan air force was using helicopters to supply the besieged town.

阿富汗空军正用直升机向被围城镇提供补给。

youdao

Rescue workers have been using helicopters to pluck people from rooftops and take them to safety.

营救人员不断通过直升飞机救起在屋顶上的居民，并将他们送到安全的地方。

youdao

The authorities later said that using helicopters to put spray water on reactor no. 4 might not be feasible.

官方后来表明使用直升机向4号反应堆注水可能无法实行。

youdao

Authorities are using helicopters to drop aid to isolated areas.

VOA: standard.2009.10.06

They are also setting backfires to clear away dry brush, and using helicopters and airplanes to drop water and fire retardant.

VOA: standard.2009.09.01

Armed officers were brought in to surround the area, using helicopters to try to track the gunman down.

BBC: Mass shootings and gun control

What seems clear, though, is that crop-dusting as carried out in recent years using helicopters to spray the groves with a substance known as lebaycid has been outlawed on environmental grounds by a European Union directive, which has been endorsed and reaffirmed by the Council of State, Greece's highest constitutional authority.

ECONOMIST: There is nothing absolute about the rule of law

And now Libya is embroiled in the worst violence to rock the Middle East during the current wave of uprisings, with 41-year ruler Colonel Muammar Gaddafi using snipers and helicopters to shoot down protesters in the capital city Tripoli and sending fighter jets to fire missiles at rebel forces.

FORBES: The Libyan Crisis: Where Are Oil Prices Going?