... port charge 港口费 port collar 带孔短节 port conservancy 港湾管理局 ...
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At least one port of the valve connector has a collar.
阀门连接器的至少一个端口具有套环。
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He remembers a hotel lobby in the small, blue-collar port town of Arlington, Ore.
NPR: Woody Guthrie's Fertile Month on the Columbia River
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