1. Every winter, Garden Court, in the flower tree wither, water freezing, Emperor Yu-hing, not diminished, so that the ladies along the lines of folk paper-cut, with Choi Jin-cut as a mosaic, decorative branches, hanging in the trees, while cut flowers, Ling Trapa natans, lotus qian and other items, get rid of the pool of ice water one by one arrangement, as the spring and summer gorgeous scenery, fun to watch.
每到冬天，园苑中花树凋零，池水结冰，隋炀帝游兴不减，令宫女们仿照民间剪纸，用彩锦剪为花叶，点缀枝条，挂于树上，同时剪成荷花、菱芰、藕芡等物，去掉池中冰块，逐一布置水上，如同春夏之交的艳丽景色，让人赏心悦目。
2. The results of the 60 days experiment showed that both submersed macrophytes(Hydrilla verticillata, Potamogeton malaianus and Vallisneria natans) and floating-leaved macrophytes(Nymphoides indica and Trapa quadrispinosa)had very high removal rates for TN, TP, NO_3~——N and PO_4~——P, and the values exceeded 60%, but Potamogeton malaianus and Vallisneria natans were most effective at removing nutr...
结果表明，沉水植物马来眼子菜、苦草、轮叶黑藻和浮叶植物荇菜、菱等5种水生植物对水体的总氮、总磷、硝态氮和正磷酸盐都有较好的去除效果，去除率在60%以上，且以马来眼子菜和苦草的效果最好，去除率在80%以上。