Deer had stripped all the bark off the tree.

鹿把树皮全都啃光了。

《牛津词典》

Deer had stripped the tree of its bark.

鹿啃掉了树皮。

《牛津词典》

A tree needs bark.

树需要皮。

youdao

These include sassafras,vanilla, wintergreen, cherry-tree bark, licorice root, black cherry and cane sugar.

VOA: special.2011.08.01

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

VOA: special.2009.06.30

Girls with cheeks smeared with thanaka (sun block made from ground tree bark) balance two to a bicycle.

BBC: A new dawn in Burma

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

NPR: Love And Lunacy: Vivaldi's 'Orlando Furioso'

Two years later they're found living off tree bark, wearing animal skins and making nutritional smoothies out of locally gathered herbs and their own urine.

FORBES: Magazine Article