hēi huà / de / shù pí / yán sè / jiào / shēn / chéng shú / zhí zhū / zài / shān lín / zhōng / hěn / róng yì / biàn rèn

黑桦的树皮颜色较深，成熟植株在山林中很容易辨认。

The bark of Betula dahurica is relatively dark, so mature trees are easy to recognize in the forest.