Individuals considered a security risk will have to report to immigrationauthorities within 30 days.
被视为危险分子的个人将必须在30 天之内向移民当局报到。
《柯林斯英汉双解大词典》
2
After a month in hospital, she was given help by the Refugee Council, a charity, and the immigrationauthorities granted her leave to remain for five years.
在医院呆了一个月之后,她得到了难民委员会(一家慈善机构)的帮助,移民局同意她留下来呆五年。
3
To evade Mexican police and immigrationauthorities, the children jump onto and off of the moving train cars. Sometimes they fall, and the wheels tear them apart.