to feel or show great happiness about something非常高兴;深感欣喜;充满喜悦
Everyone rejoiced at the news of his safe return.听到他安全返回的消息,大家都欣喜万分。
She rejoiced in her good fortune.她为自己的好运高兴不已。
[ + to infinitive ] I rejoiced to see that she had made such a quick recovery.看到她这么快就痊愈了,我非常高兴。