State Department Acting Spokesman Robert Wood said Clinton,in her calls to the Pakistani leadership on Saturday, urged a non-violent settlement of the confrontation with the opposition and said that there should be no impediments to peaceful, democratic assembly.

VOA: standard.2009.03.16

What these kings do, these kings and queens is they get rid of these impediments to their authority.

这些国王和女王们,扫清障碍以巩固王位

耶鲁公开课 - 欧洲文明课程节选

One thing absolute monarchs don't want is they don't want impediments to their personal rule.

绝对统治者厌恶的一点,就是妨碍他们个人专制的绊脚石

耶鲁公开课 - 欧洲文明课程节选

Liberty means the absence of constraints or impediments to action.

现代自由意味着人们的行动,将免于他人的妨碍或是国家的强制约束。

耶鲁公开课 - 政治哲学导论课程节选