relapse

The patient seemed to be recovering, but then she suddenly relapsed and had to return to the ICU.

(Chinese) 病人看起来正在康复，但随后病情突然复发，不得不返回重症监护室。

Doctors warned him that if he didn't complete the full course of antibiotics, his infection might relapse.

(Chinese) 医生警告他，如果他不完成整个抗生素疗程，他的感染可能会复发。

After six months of healthy eating, he relapsed into his old habit of eating fast food every night.

(Chinese) 在坚持了六个月的健康饮食后，他又落回了每晚吃快餐的老习惯。

The social worker focused on helping former inmates so they wouldn't relapse into criminal behavior.

(Chinese) 社会工作者致力于帮助前囚犯，使他们不会重新陷入犯罪行为。