gymnastic apparatus consisting of a bar supported in a horizontal position by uprights at both ends
例句
用作名词 (n.)
The strong man could turn an iron bar. 这个身体强壮的人可以绕单杠。
The basic elements of routines on the horizontal bar include giant swings,changes of grip,changes of direction,releast and regrasp of the bar,dismount and landing. 单杠全套动作的基本步骤包括大回环，换握，变换方向，脱手再握，下法和着地。
美
