With a little more effort, I can express a binary tree — a tree with each node holding a value and exactly two branches. A simple binary tree in Haskell looks like this.
只要多付出一点功夫，就能表达b树——b树的每个节点都容纳一个值和两个分支。
Beijing's winter, with snow still on the ground, dark-gray bare tree branches in the clear skies, and the distance is one or two floating kite, I was in a shocked and sad.
北京的冬季，地上还有积雪，灰黑色的秃树枝丫叉于晴朗的天空中，而远处有一二风筝浮动，在我是一种惊异和悲哀。
Then out of the house, saw the road covered with numerous branches, two more than a large camphor tree shaking.
于是冲出家门，看见到马路上落满无数枝桠，两棵大樟树摇晃不止。
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