关于他缺席的原因已经有多种传闻。

There has been much gossip about the possible reasons for his absence.

《柯林斯英汉双解大词典》

我想不出他缺席的任何理由。

I can't think of any possible explanation for his absence.

《牛津词典》

你认为这就是他最近缺席的原因吗？

Do you think that's why he's been absent recently?

youdao

In the solitude, the solitude of that absence, the boy uses the tree to work his will playfully.

在这样的孤独里，缺席的孤独里，这个孩子用树来玩。

耶鲁公开课 - 现代诗歌课程节选

It's his absence that leaves the boy alone to his own devices.

正是他的缺席让这个孩子一个人,玩自己的玩具。

耶鲁公开课 - 现代诗歌课程节选