Definition: something that makes it difficult to move or make progress Level: C2
财务限制常常是创新的主要障碍。
Financial constraints often serve as a major ___block to innovation.
对许多学习者来说，主要的障碍是准备不足。
For many learners, the primary ___block is insufficient preparation.
官僚主义的繁文缛节是完成文书工作的持续障碍。
The bureaucratic red tape is a constant ___block in completing the paperwork.
