hit-and-miss ventilator是什么意思，hit-and-miss ventilator的翻译，hit-and-miss ventilator音标、读音、用法和例句

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hit-and-miss ventilator是什么意思，hit-and-miss ventilator的翻译，hit-and-miss ventilator音标、读音、用法和例句_耀久九英英词典