A brass instrument consisting of a long cylindrical tube bent upon itself twice ending in a bell-shaped mouth and having a movable U-shaped slide for producing different pitches.

• 一种铜管乐器，由弯曲两次的长圆筒形金属管构成，尾部有喇叭形口，有一个可滑动的U形拉管，可发出不同音高的音