警戒的

There is a tight security cordon around the area.

这一地区有严密安全警戒圈。

She can walk through the tightest security check point.She can directly go to Uplight's office.But she was feared to do so.

她能通过最严密安全警戒系统，能直接到兰皮办公室，但她害怕去那里。

Scientists on Wednesday raised the alert level for Anak Krakatoa and Tangkuban Prahu -- which regularly spew gas and rumble -- from "normal" to "warning," the middle of three alert levels.

上三，科学家们将喀拉喀火山和唐库班珀拉胡火山警戒度由“正常”提高到“警告”，三级警戒中间等级，因为这两座火山近来定期喷出火山灰，并发出声音。