An untended lawn or garden can signal an absent owner.

一片被忽视的草坪或者一座荒废的花园显示主人不在家。

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The other character that's mentioned in the poem is the boy's father, whose trees they are, the property owner, who also is absent.

这首诗里提到的其他人是他的爸爸，这些树就是他爸爸的，这些财产的拥有者，但也没有出现。

youdao

The other character that's mentioned in the poem is the boy's father, whose trees they are, the property owner, who also is absent.

这首诗里提到的其他人是他的爸爸，这些树就是他爸爸的，这些财产的拥有者，但也没有出现。

耶鲁公开课 - 现代诗歌课程节选

So while the title may be invalid, he can get it back by foreclosing again on the absent former owner.

FORBES: Massachusetts Supreme Court Strips Foreclosure Buyer Of Property