哪个英语短语有隔离的意思

"He was in hospital for six months.He felt as if he was_(B) cut off_ from the outside world.

cut off (隔绝)的含义:
1. To separate from others; isolate. 例："She was cut off from her family."
2. To stop suddenly; discontinue.
3. To shut off; bar.
4. To interrupt the course or passage of: 例:The infielder cut off the throw to the plate.
5. To interrupt or break the line of communication of: 例:The telephone operator cut us off.
6. To disinherit: 例: cut their heirs off without a cent.

separate from

B cut off

B cut off 与世隔绝