canopy：a cover fixed over a seat or bed, etc. for shelter or decoration 树荫，华盖

pontoon：any of a number of flat-bottomed boats or hollow metal structures joined together to support a temporary roadway over a river, an estuary, etc （作浮桥用的）平底船或金属空筒; 趸船

maroon：leave stranded or isolated with little hope of rescue 把...放逐到无人岛上;使孤立无援

undulate：have a wave-like movement or appearance 波动; 起伏; 呈波浪形

filthy：disgustingly dirty; filled or smeared with offensive matter; foul, nasty不洁的,污秽的

akin：similar or related in quality or character; akin(p), kindred, related 近似，有关系的

murky: clouded as with sediment, clouded, mirky, muddy, turbid 混浊的；黑暗的