如果你在冬天剥桦树皮，我们称它为“冬树皮”，另外一层更加坚硬的紧贴树皮的树层就可以生产出更强更硬的材料。

If you peel birch bark in the winter, we call it "the winter bark", another layer, a tougher inner layer of the tree adheres to the bark, producing a stronger material.

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这是一种生长在澳大利亚的非常稀有的树——冬花，但它更广为人知的名字是夜冠橡树。

It's a species of a very rare tree that grows in Australia, Eidothea hardeniana, but it's better known as the Nightcap Oak.

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我终于知道了，冬，秋，春，夏时的树都是美丽的。

I finally know, winter, autumn, spring and summer when the tree is beautiful.

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