树皮的英文：
tree bark

参考例句：

The tree will gradually develop tough bark.
树会慢慢地长出坚韧的树皮。

It is necessary to chip off the bark of the tree.
有必要把这树皮扒下来。

I pass my hands lovingly about the smooth skin of a silver birch, or the rough, shaggy bark of a pine
我用手喜爱地抚摸过一株白桦那光潮的树皮，或一棵松树的粗糙树皮。

The diseased trees are marked by protuberances on their bark.
有病的树木可由其树皮上的结节看出.

The mountain bark beetle is a familiar pest in the forests of British Columbia.
山树皮甲虫是不列颠哥伦比亚省森林里常见的害虫。

evergreen oak of the Pacific coast area having large leathery leaves; yields tanbark.
太平洋沿岸的一种常绿栎树的一种,叶大,皮质；生产鞣料树皮。

trees with rough bark; rough ground; a rough ride; rough skin; rough blankets; his unsmooth face; unsmooth writing.
有着粗糙树皮的树；粗糙的地面；粗野的驾驶；粗糙的皮肤；粗毛毯子；不光滑的脸；不流畅的作品。

A tropical asian evergreen tree (Cinnamomum cassia) having aromatic bark used as a substitute for cinnamon.
一种亚洲常绿热带乔木(山扁豆属肉桂树),有可作肉桂皮替代品的芳香树皮。

Roots of grass and barks of trees which one may eat when starving
草根树皮

The bark of plane trees peels off regularly.
悬铃木的树皮到时候就脱落.

tree是什么意思：
n. 树，木料，树状物
v. 赶上树；爬上树；逃上树

The trees are sparse.
树木稀疏。

The trees are in blossom .
树上鲜花盛开。

the parent tree
母树

Such a tree may be at odds with a scientific tree.
这种树，可能与科学上的树有区别。

Deciduous trees: Hardwood trees which shed their leaves.
落苣树:年落苣的硬木树。

bark是什么意思：
v. 吠叫；咆哮；大声喊出；厉声质问
n. 犬吠；树皮

barking machine
去皮机

She barked the boy away.
她把那男孩喝走了。

Barking dogs seldom Bite
会叫的狗不会咬人

Timid dogs Bark most
狗胆小,拼命叫

Barking dogs seldom bite.
爱叫的狗很少咬人。