求翻译：　　铁树又名苏铁，属苏铁科，苏铁属常绿乔木，现存于地球上最古老的种子植物，树形美观，室内盆栽高可达3米，茎粗圆柱状，没有分枝，有粗大的叶痕，鱼鳞状。叶簇生于茎顶，大型羽状复叶排列紧密，小叶短而窄，呈龙骨状排列，小叶线形，革质，尖端坚硬，浓绿色具光泽，叶缘反卷。性喜阳光、干燥和通风良好环境，不耐寒，好肥，喜沙质土壤，生长缓慢。这种植物也是吸收室内苯污染的绝顶高手，而且能有效分解存在于地毯，绝缘材料、胶合板中的甲醛和隐匿于壁纸中对肾脏有害的二甲苯。同时，铁树也具有很高观赏价值，只是大型盆栽品种价格比较昂贵。是什么意思？

　　Sago Cycad, is a Cycad, Cycas revoluta is an evergreen tree, existing in Earth's oldest seed plants, tree-like in appearance, indoor potted plants up to 3 m high, stem diameter cylindrical, not branched, have thick leaves marks, scale-like. Stem of the leaf cluster to the top, large closely arranged pinnately compound leaf, Lobular short, narrow, keel-like arranged rosette shape, leather quality, tip stiff, thick green luster, the margin against the volume. Hi sunny, dry and well-ventilated environment, not cold, good fat, sandy soil, grows slowly. This plant is the absorption of benzene pollution indoor top experts, and it can decompose and exist in carpet, insulation material, plywood formaldehyde and harmful to the kidneys of xylene in hidden in wallpaper. Meanwhile, sago also has a high ornamental value, but expensive large potted variety.