life-jacket rack是什么意思，life-jacket rack的翻译，life-jacket rack音标、读音、用法和例句

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life-jacket rack是什么意思，life-jacket rack的翻译，life-jacket rack音标、读音、用法和例句_淳朴汉英词典

life-jacket rack

基本解释

专业释义

交通運輸工程