• The National Arbor Day Foundation has challenged many cities to earn its "Tree City USA" flag by planting and protecting more trees.

    国家植树节基金会许多城市发起挑战,要求它们通过种植保护更多的树木赢得面“美国”的旗帜

    youdao

  • 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.

    查看国家植树节基金会找到更多有关的社区或者如何在市中心当志愿者的信息。

    youdao

  • 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.

    查看国家植树节基金会找到更多有关的社区或者如何在市中心当志愿者的信息。

    youdao

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