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汉语拼音：zhí shēng jī

由航空发动机带动旋翼旋转而产生升力和拉力的航空器。主要由机体、旋翼系统、发动机、起落架、操纵系统等组成。具有垂直起落、空中悬停、定点回转、前飞、侧飞、后退飞等性能，可在野外场地起降。

• Overhead, the chopper roared and the big blades churned the air.

  头顶上，直升机在呼啸，巨大的螺旋桨叶片搅动着空气。

• A black Mercedes screeched to a halt beside the helicopter.

  一辆黑色的梅赛德斯轿车在直升机旁嘎的一声刹住了。

• She served six months in prison for the helicopter caper.

  她因为直升机一案坐了6个月牢。

• The silence was broken by the whirring of a helicopter.

  直升机的嗡嗡声打破了沉寂。

• 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。

• The helicopter turned at an awful angle before righting itself.

  直升机在恢复平稳之前倾斜得很厉害。

• The supplies need to be offloaded and put on helicopters.

  这些补给要卸下来装上直升机。

• The mechanics work hard to keep the he-licopters airworthy.

  机修工努力维持直升机的飞行性能。

• He was found by a police helicopter using thermal imaging equipment.

  一架警用直升机借助热成像设备找到了他。

• A survivor was knocked unconscious when the helicopter ditched.

  在直升机紧急迫降时，一名幸存者被撞昏过去。

• More than 20 helicopters began swooping in low over the ocean.

  20多架直升机开始下降向海面俯冲。

• Helicopters helped fire crews get a jump on the blaze.

  直升机帮助消防队员控制住了火势。

• Helicopters rescued nearly 20 people from the roof of the burning building.

  直升机从失火大楼的楼顶救出了将近20人。

• To make extra certain, a police helicopter kept watch from the skies.

  为确保万无一失，一架警用直升机一直在空中警戒。

• The crew members were winched to safety by helicopters.

  船员们被直升机吊到安全的地方。