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leakproof cap /ˈliːf ˈvɛdʒɪtəbəlz ˈfaɪv/ n

中文：防漏盖

中文 · 防漏盖Español · tapón herméticoFrançais · bouchon antifuite
Meaning：Stopper for the fuel refill opening; it is threaded to prevent leakage.
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Propane or butane accessories

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