At the end of the book the child's true identity is discovered, and the bad guys get their just deserts.

在书的结尾，这孩子的真实身份被揭开了，那些坏人也受到了应有的惩罚。

《柯林斯英汉双解大词典》

He was fined for shoplifting but only received his just deserts.

他冒充顾客进商店行窃被罚款，那只不过是他应得的惩罚。

youdao

Finally, people everywhere have a strong belief in "just deserts" punishment.

最后，人们都非常相信“报应”这种惩罚。

youdao

"They fall all over the Earth, not just Antarctica, but the best places for us to find them are the deserts because they don't get weathered and they don't break down as easily."

VOA: special.2010.07.28

To some, the obesity epidemic was nothing short of Imperial America getting its just deserts, definitely no pun intended.

NPR: Rabid Reader: 'Fat Land' and U.S. Supersizing

Onlookers have delighted, as onlookers do, in the spectacle of the get-rich-quick merchants getting nothing but their just deserts.

ECONOMIST: All that glisters . . .

Or perhaps with relief, seeing a "troublemaker, " whose deed had caused their masters to become more vigilant and harsh in an effort to forestall further rebellion, now getting his just deserts.

NPR: A Radical History of the Underground Railroad