2.That's one of the great things about birch bark.
那就是桦树皮的好处之一。
3.Back then, their lifes depended on the natural resources of the forests, especially the birch tree.
那时,他们的生活依赖于森林的自然资源,尤其是桦树。
4.She noticed the trees: maple, birch, and ash.
她注意到了树:枫树、桦树和白蜡树。
5.Meanwhile, in the Russian Arctic, geoengineering plans include the planting of millions of birch trees.
与此同时,在俄罗斯的北极部分领土,地球工程计划包括种植数百万棵桦树。
6.In Finland purists insist that only birch bark should be added.
在芬兰,纯化论者坚持说只能加白桦树皮。
7.The Native American people were all adept at running very fast over the snow in these birch branch snowshoes, which if you ever tried walking in snowshoes you know it wasn't easy.