v.  阻塞，堵塞〔道路、通道等〕≈ block

n.  阻挠，阻止，妨碍 ≈ block

• obstruction

  n. 〔道路、通道、管道等的〕堵塞(物)，阻塞(物) ≈ blockage

  n. 〔对司法或政治程序的〕阻挠，拖延

• unobstructed

  a.  不被阻塞的，没有障碍的，畅通无阻的 ≈ clear

• an unobstructed view of the lake  一览无遗的湖景

• Efforts to create one of the world's largest ocean sanctuaries failed because of Russia's obstruction. 俄罗斯的阻挠

• A journey through the unobstructed part of this waterway today would pass by the splendid Valley of the Kings, where the tombs of many of these ancient monarchs have stood for over 3,000 years. 沿着这段畅通无阻的水路

• The column obstructed our view of the stage. 柱子挡着，我们看不见舞台。

• He was fined for obstructing the work of the police. 他因妨碍警察执行公务而被罚款。

BrE /əˌbriːviˈeɪʃn/