圆鼓鼓的瓶树基部似皮革，向上逐渐变细，最后生出扭曲的细枝，形似手，紧紧抓着开出的一束束粉花。
The bottle tree, plump and leathery at its base, tapers to a sprout of twisting, hand-like little branches clutching bouquets of pink flowers.
而树的形状也各不相同，有笔直向上似岑天树木的，有向两旁伸展呈伞状的，看！
The shape of the tree also each are not identical, have straight upward cen day of trees, both sides have to stretch of umbrella, look!
利用最大似然估计原理，给出了构建系统发生树的模型和算法。
A model and an algorithm were provided for constructing phylogenetic tree based on the principle of maximum likelihood estimate.
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