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water hyacinth
biol.	凤眼蓝属 (Eichhomia Kunth.，雨火花科); 凤眼蓝水葫芦，大水萍，Eichhornia crassipes Solms-Laub.
desert.	凤眼蓝
exhib.	凤眼兰
tech.	上葫芦; 水风信子; 风信子
water.res., ecol.	水葫芦
water hyacinth Floating aquatic plant, Eichornia crassipes of tropical America, having showy bluish-purple flowers and swollen leafstalks: family Pontederiaceae. It forms dense masses in rivers, ponds, etc., and is a serious pest in the southern U.S., Java, Australia, New Zealand, and parts of Africa
environ.	水葫芦 (浮动水生植物，美洲热带地区的水葫芦，有华丽的蓝紫色花朵和肿胀的叶柄：雨久花科。它形成于河流、池塘等的密集区，是美国南部、爪哇、澳大利亚、新西兰以及非洲部分地区的一种严重的有害植物。)

water hyacinth : 5 phrases in 2 subjects

Biology	4
Life sciences	1