铅管工把管口撑大後套在另一截管子上。 The plumber splayed the end of the pipe before fitting it over the next section.
单簧管，黑管一种管乐器，有直的圆筒形管身和一个外敞的管口及一个单簧吹口，以指孔和键的方式演奏 A woodwind instrument having a straight, cylindrical tube with a flaring bell and a single-reed mouthpiece, played by means of finger holes and keys.
