1.
We must step up our vigilance.
我们一定要提高警惕。
2.
Be on guard. There are pickpockets around here.
要提高警惕，这里有扒手。
3.
We must however heighten our vigilance.
但是我们应当提高警惕。
4.
We should always bear in mind that there is an alarm, and keep on guard all times.
我们要警钟长鸣, 时刻提高警惕。
5.
He must [should] have a long spoon that sups with the devil.
同坏人打交道必须提高警惕。
6.
Yuke Landing Force That big bird's got good aim. Stay sharp!
那个大鸟例无虚发。所以提高警惕了！
7.
The order urge the armed force to enhance their alertness
该项命令敦促武装部队提高警惕
8.
The masses of Taiwan compatriots should heighten their vigilance against the separatist scheme.
对此，广大台湾同胞应当提高警惕。
9.
The price of liberty is eternal vigilance.
自由的代价是永久提高警惕。
10.
A lot of people will be alert and waiting.
许多人都将提高警惕等待着。
11.
Now we'd better pay attention.
现在，我们还是提高警惕为好。
12.
The order urged the armed forces to enhance their alertness.
该项命令敦促武装部队提高警惕。
13.
Be on your guard ! He' s a sly old fox.
提高警惕,他是一个狡猾的老狐狸。
14.
Developers have to be vigilant when it comes to security.
当提到安全问题时开发者们必须提高警惕。
15.
Patriotism is easy to understand in America ; it means looking out for yourself by looking out for your country .
爱国主义在美国很容易了解；它意味着通过为国家提高警惕的方式来为自己提高警惕。
16.
some are still making trouble and we must heighten our vigilance.
其中，一部分人还在捣乱，必须对他们提高警惕。
17.
Every country that advocates peace must be on the alert.
每一个主张和平的国家都必须提高警惕。
18.
If what you receive is too short or not detailed, be careful.
如果你收到的计划书过于简略，得提高警惕了。