这些树干光滑的美洲山杨，或者叫做“颤杨”有着一个秘密。
The smooth white trunk of Populus tremuloides, or “Quaking Aspen, ” hides a secret.
生长在西科罗拉多州埃尔克山脉中的颤杨，其叶子会在微风中颤抖，在北美非常普遍。
Quaking aspens like these in the Elk Mountains of western Colorado, whose leaves tremble in the slightest wind, are common across North America.
秋天在美国图片。颤杨就像这样在科罗拉多州的埃尔克山西部，树叶在微风中颤抖这是普通横过北美洲。
Quaking aspens like these in the Elk Mountains of western Colorado, whose leaves tremble in the slightest wind, are common across North America.
就单棵树(individual tree)来说Pando并不是最古老的树，但是生长在犹他州的无性系颤杨(QuakingAspen)确又的确是最古老的。
While Pando isn't technically the oldest individual tree, this clonal colony of Quaking Aspen in Utah is truly ancient.
就单棵树(individual tree)来说Pando并不是最古老的树，但是生长在犹他州的无性系颤杨(QuakingAspen)确又的确是最古老的。
While Pando isn't technically the oldest individual tree, this clonal colony of Quaking Aspen in Utah is truly ancient.
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