The tree is leafless [ defoliate ] .是什么意思？

The tree is leafless [ defoliate ] .

这棵树 秃 了.

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

tree

n. 树，木料，树状图，宗谱；vt. 把…赶上树，使处于困境，把鞋型插入（鞋内）；

例句
If the soil is allowed to dry out the tree could die.
如果听任土壤变干，树木可能会枯死。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

leafless

adj. 无叶的；

例句
A beautiful fig tree that had stood in their yard was leafless and barren.
原来他们院子里那棵漂亮的无花果树已不长一片树叶，不挂一个果子。

defoliate

v. （使）落叶；

例句
Dioxin was the ingredient in Agent Orange, used to defoliate Vietnam.
越南战场上用于毁灭林区的“橙剂”，其成分是二氧杂芑。