| 单词 | 启闭 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔finger hole〕Music Any of the holes on a wind instrument that cause a change in pitch when covered by a finger.【音乐】 乐器的指孔：管乐器上随着手指的启闭而能改变音高的一孔美国传统〔indistinct〕There were indistinct sounds of the cell door opening and closing a few times.偶尔有几回传来牢门启闭的微弱声响。英汉大词典 |
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