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。