helicopter forbidden region

例句：

1. 1. The helicopter landed safely at the airport.
   直升机安全地降落在机场。
2. 2. He flewa helicopter to deliver supplies to the remotevillage.
   他驾驶直升机为偏远村庄运送物资。
3. 3. The pilot was able to evade the storm by using a helicopter.
   飞行员通过使用直升机避开了暴风雨。