警戒

There is a tight security cordon around the area.

这一地区周围设有严密的安全戒圈。

With Tirol before it, the motley battlewagon went on combat alert.

在泰洛行星周围，各种舰处于戒状态。

Strikers were enjoined from picketing.

罢工者被戒禁止。

The sentry is on guard.

那哨兵在担任戒。

Stalwart policemen stood guard outside.

强壮的察在外面戒。

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

她能通过最严密的安全戒系统，能直接到兰皮的公室，但她害怕去那里。

Iraqi security forces were placed on high alert and American aircraft —unpiloted reconnaissance drones flying low, and fighter jets roaring high above —crossed the capital.

伊拉克安全部队处于戒状态，美国军在首都上穿梭，无人驾驶侦察机低飞行，喷气机啸。

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.

上周三，科学家们将喀拉喀托火山和唐库班珀拉胡火山的戒度由“正常”提到“告”，三级戒的中间等级，因为这两座火山近来定期喷出火山灰，并发出隆隆的声音。