[] anything that slows down development or progress, particularly in business or industry(尤指工商业发展中的)瓶颈,障碍◆eliminating bottlenecks in the manufacturing process消除生产过程中的瓶颈⨁major / potential / severe bottlenecks主要的/潜在的/严重的瓶颈⨁to cause / create a bottleneck引致/造成瓶颈⨁to clear / eliminate / remove a bottleneck清除/消除/除去瓶颈