They were cut off from the West in 1948 when their government closed that border crossing.

当他们的政府于1948年封锁了那个那个边境通道以后，他们与西方国家的联系就被切断了。

《柯林斯英汉双解大词典》

Try to avoid crossing your arms over your chest and looking closed off.

尽量避免双臂交叉在胸前，看起来很封闭。

youdao

Both seem somewhat nervous - he with his left arm crossing his body and fingers slightly rounded in a closed position - and her with her left hand elevated as if to keep harm at bay.

两个人看起来似乎都有些紧张——他将左手微微放到身体前方，手指轻轻地握紧——而她则将左手高高抬起，似乎在控制自己的情绪。

youdao

Egypt had previously kept the crossing closed to cargo, while Israel also maintained heavy restrictions.

BBC: Gaza construction convoy crosses from Egypt

Canadian authorities closed the border crossing immediately after the shooting.

CNN: STORY HIGHLIGHTS

The M48 old Severn bridge and Second Severn crossing were closed due to ice, but have since reopened.

BBC: Power restored after heavy snow