| 单词 | air opening |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔reed〕A flexible strip of cane or metal set into the mouthpiece or air opening of certain instruments to produce tone by vibrating in response to a stream of air.簧片：一节有弹性的置于某些乐器的吹口或通气口中的竹片或金属，随着气流振动而发声美国传统 |
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