blocker door的用法和樣例：
例句
- The ddrag link attaches to the blocker door with a link attachment fittin and to the inner duct with a bolt.
阻力連桿用一個連接裝置連接到阻流門並用一個螺栓連接到內部管道上。 - When extended, the blocker doors block the fan exhaust, forcing air in the reverse direction through the cascade segments.
當擴展時，阻流門阻止風扇排氣，迫使空氣反向通過級聯段。
