After convalescence he had a relapse.是什么意思？

After convalescence he had a relapse.

他于痊愈之后,病又发作了一次.

after

prep. …后的，（表示时间）在…以后，（表示位置、顺序）在…后面；conj. 在…以后；adv. 以后，继后；adj. 后来的，以后的；

例句
Her lover walked out on her after she had aborted their child.
她的情人在她打掉胎儿后甩了她。

convalescence

n. 渐愈，恢复期；

例句
After convalescence he had a relapse.
他于痊愈之后,病又发作了一次.

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

relapse

vi. （病）再发，复发，故态复萌，再度堕落，再陷邪道；n. [医]再发，旧病复发，复旧，故态复萌，退步，堕落；

例句
It is by no means clear that the financial markets will not relapse into panic.
现在还不能确定金融市场不会重新陷入恐慌。