Deer had stripped the tree of its bark.

鹿啃掉了树皮。

《牛津词典》

The drug is derived from the bark of the cinchona tree, native to South America, and by 1856 demand for the drug was surpassing the available supply.

这种药物是从原产于南美洲的金鸡纳树的树皮中提取的。到了1856年，对这种药物的需求已经超过了现有的供应。

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They would peel large sheets of bark from the tree to form lightweight yet sturdy canoes.

他们会从树上剥下大片的树皮，做成轻便而结实的独木舟。

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Small pieces of tree bark or cut up leaves can be used.

VOA: special.2009.06.30

Afterward, the newlyweds carve their marriage vows into the bark of a tree.

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Aspirin, for example, was originally derived from willow bark, and the anticancer drug Taxol comes from the bark of the Pacific yew tree.

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The drug is Taxol, Bristol's brand name for paclitaxel, a trace compound found in the bark of the Pacific yew tree in the northwestern U.S. During the 1970s researchers for the U.S. government's National Cancer Institute discovered that paclitaxel stops the growth of some cancerous tumors.

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