| 单词 | open pipe |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔barrel organ〕A mechanical instrument on which a tune is played by the action of a revolving cylinder fitted with pegs or pins that open pipe valves supplied by a bellows.手摇风琴：一种内部装有一个带弦纽或钉子的旋转圆筒的机械制动乐器。有风箱使风进入空心琴管内而产生音调美国传统 |
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