verb
R
To make someone feel very happy.
The news of their engagement will overjoy their families.
他们订婚的消息会让他们的家人非常高兴。
R
To feel very happy about something.
They will overjoy at the sight of their newborn baby.
看到他们的新生儿，他们会非常高兴。
translation
使...极为高兴, 极为高兴