旋翼飞机

例句：

1. 1. The helicopter is a popular mode of transportation.
   直升机是一种流行的交通工具。
2. 2. The pilot had to make an emergency landing due to bad weather.
   飞行员因为恶劣天气不得不紧急降落。
3. 3. The rotorcraft was designed for long-distance travel.
   这种旋翼飞行器是为长途旅行设计的。