清单2中的代码示例展示了如何向树中添加列。

The code example in listing 2 shows how columns can be added to a tree.

youdao

一边想，他一边爬出窗户，爬上树，向树稍的云端爬去。

Without stopping to think, he climbed out of his window and started climbing up towards the clouds.

youdao

我跄跄踉踉地穿过蕨丛，猛地撞向一棵树，把树熊撞向树。

I floundered through the ferns and tried barging into a tree, koala first.

youdao

When I see birches bend to left and right Across the lines of straighter darker trees, I like to think some boy's been swinging them.

当我看到白桦树弯下身子，向左，也向右,穿过排列成行的挺直黑黑的树，我总以为有个孩子把白杨“荡“弯了。

耶鲁公开课 - 现代诗歌课程节选