来自国外港口的船舶白天进港须挂检疫黄旗，检疫结束后降下，夜间用三盏红灯替代。
Yellow Flag must be hauled up for vessels from foreign countries daytime and be hauled down only after free pratique granted. Three red lights should be switched on during nighttime as substitute.
来自国外港口的船舶白天进港须挂检疫黄旗，检疫结束后降下，夜间用三盏红灯替代。
Yellow Flag must be hauled up for vessels from foreign countries daytime and be hauled down only after free pratique granted. Three red lights should be switched on during nighttime as substitute.
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