Trapped in a pocket of air, they had only 40 minutes before the tide flooded the chamber.
他们被困在有一点空气的弹丸之地，再过40分钟洪水就会淹没这间屋子了。
《柯林斯英汉双解大词典》
2
But the father of the nation never imagined that the inhabitants of his cooling chamber might try to pocket the silverware and run off with the teapot.