The 30 to 50 American troops stationed at Point Alpha were on call 24 hours a day for six weeks at a time and were rarely permitted to leave their base during that period.
在阿尔法哨所有30—50名美军人员，他们24小时执勤，每六周轮换一次，在此期间基本不允许离开基地。
2
We don't allow dogs here; Children are not permitted beyond this point.
我们不允许狗在这儿；孩子们不允许超过这个界限。
3
That it permitted the population to expand its range as well is a more subtle point.