1.
The troops were placed on full alert.
部队处於全面戒备状态.
2.
(order sb to)relax after an alert
（命令某人）解除戒备状态
3.
They have put the army on the alert.
他们已使军队进入戒备状态。
4.
The troops (were) stood down: it was a false alarm.
部队解除了戒备状态, 原来是虚惊一场.
5.
Britain remains on a" critical" state of alert.
现在英国上下还处于高度戒备状态。
6.
Quarters for the palace army were kept in constant readiness.
宫廷卫队的营房经常处于戒备状态。
7.
They stood down after the enemy disappeared.
他们在敌人不见踪影之后解除了戒备状态。
8.
Nuclear-armed bombers wer put on the alert during the crists.
核武装轰炸机在危机期间进入高度戒备状态。
9.
The patrol police on duty are on the alert against any possible disturbances.
值班巡警处于戒备状态，随时准备应付任何可能发生的骚乱。
10.
Although CUNARD has denied reports of a terrorist threat against the vessel, security was tight and police maintained a high profile.
虽然冠达否认有恐怖分子针对邮轮的恐怖报道，还是加强了安全警戒，警察处于高度戒备状态。
11.
And so this southern port city is truly in lockdown.
现在这座南部的港口城市确实已经进入在高度戒备状态了。
12.
Like other animals, we are on guard until we know it is safe to relax.
我们感觉到很安全才会放松,否则将一直处于戒备状态.
13.
The governors have declared a state of emergency in North Carolina and Virginia.
贝卡罗来纳州和佛吉尼亚州州长宣布这两个州进入紧急戒备状态。
14.
These networks are on the alert for warning signs that show the weakening of rock layers that can precede an earthquake.
这些网络始终处于戒备状态，搜索地震前岩石可能松动的警告迹象。
15.
And neither does the hostility that once led both our countries to keep thousands of nuclear weapons on hair-trigger alert, pointed at each other.
导致两国将数千枚核武器指向对方，随时处于一触即发戒备状态的那种敌意也已不复存在。
16.
A battalion of combat-hardened public-relations officers stood on red alert twenty-four hours a day.
一营久经战阵的新闻发布官也接到命令，二十四小时都处于紧急戒备状态。
17.
I had some secret doubts hung about me, I cannot tell from whence they came, bidding me keep upon my guard.
我心里又产生了一种不知道从哪里来的疑心，促使我采取戒备的状态。
18.
The Armies were constantly on the alert not to be taken by surprise.
部队一直处于警戒状态以防突然袭击。