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ventilated rib /ˈvɛntɪlˌeɪtɪd ˈɹɪb/ n

中文：枪管散热条

中文 · 枪管散热条Español · banda de ventilaciónFrançais · bande ventilée
Meaning：Strip with air holes for cooling the barrel of the shotgun.
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Found in these illustrated scenes（2）

Shotgun Shotgun

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