obstruction

詞意辨析：

obstacle, barrier, obstruction, bar, hindrance

這些名詞均含“障礙(物)”之意。
obstacle: 指在達到目的或前進的過程中必須消除或繞過的障礙物，也指起阻礙作用的情況。
barrier: 常指臨時的或者可能跨越的障礙。
obstruction: 常既指具體的障礙又可指抽象或喻意上的阻礙。
bar: 既可指阻止進出或通過的柵欄一類的障礙物，也可用於抽象意義障礙。
hindrance: 指妨礙他人進步或做事的人或物。英文字典英文字典

英文解釋：

名詞 obstruction:

1. any structure that makes progress difficult
   同義詞：obstructor, obstructer, impediment, impedimenta
2. the state or condition of being obstructed
   同義詞：blockage
3. something immaterial that stands in the way and must be circumvented or surmounted
   同義詞：obstacle
4. the act of obstructing
5. getting in someone's way

　

例句：

1. Partisan politics is often an obstruction to good government. Office politics are often debilitating and counterproductive.
   黨羽的政治陰謀經常是良好政府的妨礙。公務上的政治爭鬥經常是帶削弱性質和招致反效果的
2. A bend in a pipe, bar, or other straight continuous piece made to allow it to pass around an obstruction.
   彎管，接頭管管子、桿或其他直而長的東西的一個彎，使得它能避開一障礙物
3. He was found guilty of obstruction.
   他被判阻擋犯規。
4. Your car is causing an obstruction.
   你的汽車擋道了。