危急的英文：
critical
desperate

参考例句：

brassard: "The Canadian political situation is very critical..
布拉萨尔:“加拿大的政治形势非常危急……。

Scornful[Hungry] dogs will eat dirty puddings.
人到危急时,平时所不屑做的也要做;急不暇择,饥不择食。

The state of that country is desperate.
那个国家的形势非常危急。

Great crises often call forth gifted leaders.
危急存亡之际才能产生天才的领袖。

Pressing or urgent need, especially that arising from poverty.
困难，危急急切的，紧迫的需要，尤其是从贫穷中产生的。

The patient's condition is very critical and he is in a comatose state.
病人的情况非常危急，他已经处于昏迷状态。

The very desperateness of their position forced the Communists to form a democratic army.
极端危急的处境迫使共产党要建立一支民主的军队。

The patient is at the critical stage. The food won' t stay down.
病人处于危急状态,东西吃下去就呕出来。

Their own promptitude in retreating at the critical moment saved them
他们自己在危急的时刻迅速退却，这才得以避免被歼灭。

Our homeland, the lives of our wives and children are at stake.
我们的国土家园，我们的妻室儿女的生命，都在危急中。

critical是什么意思：
adj. 紧要的，关键性的；批评的，评论性的；爱挑剔的；必不可少的；临界的

a critical juncture; a critical moment
关头

Their criticism was not negative.
他们的批评并不是负面的。

Criticism of Germany, by comparison, is muted.
相比之下，德国的指责算是柔和的了。

You are free to criticize my work.
你可以随意批评我的工作。

Please criticize my painting.
请评论我这幅画。

desperate是什么意思：
adj. 不顾一切的，铤而走险的；绝望的；极度渴望的

Desperate diseases must have desperate remedies
绝症须用烈药医

Desperate diseases must have desperate remedies.
绝症须用绝药医(在非常时刻必须采取非常手段)。

Desperate diseases need desperate remedies. ——Hippocrates
厉害的疾病要用猛药。——希波克拉底

The state of that country is desperate.
那个国家的形势非常危急。

They're desperate to escape.
他们极度想逃跑。