shut-off nozzles是什么意思，shut-off nozzles的翻译，shut-off nozzles音标、读音、用法和例句_開心英語字典

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shut-off nozzles是什么意思，shut-off nozzles的翻译，shut-off nozzles音标、读音、用法和例句_開心英語字典_柠咚词