国家植树节基金会向许多城市发起挑战，要求它们通过种植和保护更多的树木来赢得那面“美国树城”的旗帜。
The National Arbor Day Foundation has challenged many cities to earn its "Tree City USA" flag by planting and protecting more trees.
查看国家植树节基金会网能找到更多有关在你的社区栽棵树或者如何在市中心当志愿者的信息。
Check out the NADF (National Arbor Day Foundation) online to find out more about planting a tree in your area or how to volunteer in an urban center.
植树节基金会能告诉你如何以某人的名义种棵树作为礼物，以某人的荣誉捐赠一棵树，或者为了纪念挚爱载一棵树。
The Arbor Day Foundation can tell you how to plant a tree in someone's name as a gift, donate a tree in someone's honor, or memorialize a loved one by planting a tree.
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