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。
Two blind subjects used clicks and their echoes to distinguish objects like a car, tree or flag pole.
两名盲人受试者通过敲击和听其回声来辨别诸如汽车、树或棋杆等物件。
It will flag errors only if there is something in the source file that will affect the AST Tree integrity.
只有当源文件中有一些代码影响到ast树的完整性时才会标记错误。
The primary difference in tree-visitor is that the visit-node function returns several items: a new-node, a new-state, and a stop flag.
tree-visitor中的主要差别在于，visit-node函数返回多个项目：一个 new-node、一个new-state和一个 stop 标记。
You know, my great uncle had been lynched and they wrapped his body with the US flag hanging from a tree.
我的伯祖父是受私刑而死的，他的身体被包裹在美国国旗里，悬挂在树上。
You know, my great uncle had been lynched and they wrapped his body with the US flag hanging from a tree.
我的伯祖父是受私刑而死的，他的身体被包裹在美国国旗里，悬挂在树上。
Throughout Canada, maple syrup and maple products are popular, reflecting the significance of the maple tree, whose leaf adorns the flag of Canada.
在加拿大，枫叶糖浆和枫树产品非常畅销，从而反映出枫树在当地的重要性，加拿大国旗也是枫叶装饰而成。
Students in the campus singing bird to say hello, say hello to my teacher, to the national flag flying high. "when, the! When, when the!" Big tree bells are ringing.
同学们向在校园里欢唱的小鸟打招呼，向敬爱的老师问好，向高高飘扬的国旗敬礼。
In Canada they were introduced to hockey, ski-jumping, the maple-leaf flag as well as the maple tree.
在加拿大他们还了解到了冰球、跳高滑雪及印有枫叶的国旗。
In Canada they were introduced to hockey, ski-jumping, the maple-leaf flag as well as the maple tree.
在加拿大他们还了解到了冰球、跳高滑雪及印有枫叶的国旗。
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