擅自做某事：在未经允许的情况下做某事。
擅自告诉某人某事：在未经允许的情况下告诉某人某事。
... take pity on 怜悯 take the liberty of 擅自 take measures 采取措施 ...
... 不揣冒昧 = presume to 不揣冒昧 = take the liberty of 不揣冒昧 = venture to ...
冒昧的；擅自
I should take the liberty of introducing her to my admirable aunt.
我想斗胆把她介绍给我那可敬的姑母。
May I take the liberty of providing a new prescription? It should prove far more effective.
能允许我提供一个新的处方吗？我保证会更有效的。
We take the liberty of writing to you with a view to building up business relations with your firm.
我们冒昧通信，以期待与贵公司建立业务关系。
In the case of life and liberty, I can't take my own life.
就生命和自由而言，我不能剥夺自己的生命。
公正课程节选 : 耶鲁公开课
Under the law of nature, I'm not free to take somebody else's life or liberty or property, nor am I free to take my own life or liberty or property.
根据自然法，我不能随意剥夺他人的生命，自由或财产，也不能随意剥夺自己的生命，自由或财产。
公正课程节选 : 耶鲁公开课
Activists cheered as he said Labour had appeared "casual" about civil liberties and said he would not let the Tories or Lib Dems "take ownership of the British tradition of liberty".
But I will take the liberty this time of dismissing as absolutely absurd this notion that somehow we were deploying 10 percent of the Navy -- some 34 ships and an aircraft carrier -- in support of the president's trip to Asia.
Those of us who yearn to be free of oppressive government can take heart that the spirit of liberty is surging.
FORBES: Are Americans In Danger Of Losing Their Liberty To Tyranny?