The Church of England put a serious obstacle in the path of women who want to become priests.英国国教在妇女成为牧师的道路上设置了重大障碍。Their boycott of the talks constitutes a serious impediment to peace negotiations.他们对会谈的抵制成了和平谈判的重大障碍。Nuclear weapons are a major obstacle on the road to peace.核武器是通往和平之路上的重大障碍。