A DataGraph object represents data in a tree-like structure, with a root object at the top of the tree and children under it, similar to the structure that you might find in an XML document.

DataGraph对象以类似于树的形式表示数据，树的顶部是根对象，其下面为各个子项，与您在XML文档中看到的结构类似。

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Parents and children plant a tree together.

父母和孩子一起种一棵树。

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One day, when the children were playing games around the tree, John came and told them that he was going to carry it into the woodshed.

一天，当孩子们在树旁玩游戏时，约翰过来告诉他们，他要把树搬到柴棚里去。

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"He gives presents that children want for Christmas, and give it to them under their tree."

VOA: special.2009.12.21

They designed and created this timeline and then shared with the children based on a timeline and the family tree that the professor had in his story.

全是由他们自己设计并制作的,并与大家分享,这样的家谱就像教授在,他的故事中给出的那样。

麻省理工公开课 - 媒体、教育、市场课程节选

According to Allergy UK, peanut and tree nut allergy is the most common food allergy in adults and children.

BBC: Store pulls monkey nuts from shelves over 'peanut warning'

Dr. ELIZABETH MATSUI (Johns Hopkins University): We still need to be very vigilant about protecting the children who are still peanut and tree nut allergic.

NPR: Studies Predict Odds of Outgrowing Nut Allergies

Deeply moved by the beauty of the stars shining between the branches of a fir tree, he brought home an evergreen tree and decorated it with candles to share the image with his children.

FORBES: Everything You Wanted to Know About Christmas (but were afraid to Google)