drawbridge|drawbridges

守卫放下了吊桥，让马车通过。

The guard lowered the ___drawbridge to let the carriage pass.

士兵们放下吊桥让国王的马车进入城堡。

The soldiers lowered the ___drawbridges to allow the king's carriage into the castle.

守卫放下了吊桥让商队进入城堡。

The guard lowered the ___drawbridge to let the caravan enter the castle.