伊拉克境内底格里斯河与幼发拉底河附近的枯竭区(灰色)与沼泽地(暗红色)的卫星图像。
Satellite image of drained areas (grey) amongst marshland (dark red) around the Tigris and Euphrates rivers in Iraq.
生长在美国西南部沼泽的一种观赏灌木或小乔木，具有大的粉红色或白色萼片，产生能够治疗疟疾的乔治亚树皮。
Ornamental shrub or small tree of swampy areas in southwestern United States having large pink or white sepals and yielding Georgia bark for treating fever.
木槿，美洲芙蓉：北美洲东部的一种高沼泽植物（剪秋罗属芙蓉葵） ，长有覆盖在白色细柔毛下的叶子和有猩红色基部的白色、粉红色或玫瑰色花。
A tall marsh plant (Hibiscus moscheutos) of eastern North America, having leaves covered with whitish down and flowers with white, pink, or rose petals with crimson bases.
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