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1·Huck was sitting on the gunwale of a flatboat, listlessly dangling his feet in the water and looking very melancholy.

哈克坐在一只平底船的船舷上，两只脚没精打采地泡在水里，看上去很忧郁。

2·Huck was sitting on the gunwale of a flatboat listlessly dangling his feet in the water and looking very melancholy.

哈克坐在一条平底船的船舷上边，两只脚没精打采地放在水里，看上去忧心忡忡。