PHRASAL VERB 砌墙封闭(或堵塞) If someone walls up a room, or if someone is walled up in it, walls are built blocking every door so that nobody can get in or out. 砌墙封闭(或堵塞) [Also VERB n PREPOSITION]
They had walled up her room because of the fear that things might be infected. [VERBPREP. noun (not pronoun)]