1·A slender woodwind instrument with a conical bore and a double reed mouthpiece, having a range of three octaves and a penetrating, poignant sound.
带有一个圆锥形孔和双簧管吹口的细小的木管乐器，具有三个八度音域和穿透力强而尖利的声音。
2·Most bagpipes have at least one drone. A drone is most commonly a cylindrical tube with a single reed, although drones with double reeds do exist.
完整的苏格兰风笛至少是由一根吹管、一个风袋和一根调旋律管组成。
3·When a rigid rapier is used, the space required by the loom must be at least double that of the reed space to allow the rapier to be withdrawn from the shed.
在使用刚性单剑杆时，织机的占地至少应为筘幅宽的两倍，以便使剑杆从梭口中退出。