immure|immured

在古代，罪犯常被活埋在石墙内作为惩罚。

In ancient times, criminals were often ___immured within stone walls as punishment.

他把自己关在房间里埋头写作，与外界完全隔绝。

He ___immured himself in his room to focus on writing, cutting off all contact with the outside world.